Stardate: 46379.1. Commander Benjamin Sisko and a new crew of Starfleet and Bajoran officers take command of an abandoned Cardassian space station and make an incredible discovery that will change the galaxy and Sisko's future.

Stardate: 46379.1. A new crew is assigned to a former Cardassian space station: Deep Space Nine. It is a joint Federation/Bajoran force, with Commander Sisko in charge, but his life is dramatically changed when he is declared the Emissary to the Prophets by a Bajoran priest.

Stardate: Unknown. Kira finds her loyalties divided when a Bajoran extremist wanted by the Cardassians comes to the station with questionable intentions.

Stardate: 46421.5. When the return of a man Odo sent to prison years earlier leads to his murder aboard the station, Odo becomes the prime suspect and a target for harassment.

Stardate: 46423.7. A deadly virus created by the Bajorans 18 years earlier inadvertently breaks loose aboard the station, and prompts a race against the clock to find a cure.

Stardate: Unknown. When O'Brien befriends the station's first visitor from the Gamma Quadrant, he learns that the mysterious alien is on the run from determined pursuers.

Stardate: 46531.2. Vash arrives from the Gamma Quadrant as Q plagues the station and an unknown force threatens to destroy it.

Stardate: 46910.1. Jadzia Dax is charged with a murder that her symbiont's previous host Curzon allegedly committed. Now an extradition hearing may decide whether Jadzia can be held responsible for the actions of a previous life.

Stardate: Unknown. A dangerous killer dies in an apparent accident, but the security officer providing his transport to prison believes the criminal's consciousness may have yet survived.

The Wadi from the Gamma Quadrant are to make first contact and decide to visit DS9. When they catch Quark cheating they let him off by playing a special game.

Stardate: Unknown. Grand Nagus Zek, the leader of Ferengi society, comes to DS9 to oversee the introduction of a Ferengi business presence in the Gamma Quadrant and announce Quark as his successor.

Stardate: Unknown. A wanted man from the Gamma Quadrant with questionable motives reveals to Odo stories about other "Changelings," which may hold clues to Odo's mysterious origin.

Stardate: Unknown. Sisko, Kira, and Bashir take Kai Opaka through the wormhole for a brief excursion in the Gamma Quadrant. But when they crash-land on a desolate planet, they find a divided, warring penal colony where no one ever dies.

Stardate: 46729.1. When O'Brien and Bashir beam down to a Bajoran village, the community selects O'Brien as their next Sirah - expecting him to save them from a menacing entity.

Stardate: 46844.3. Kira finds herself in a difficult moral situation when her job demands she force an adamant Bajoran man from his home in the name of progress.

Stardate: 46853.2. The DS9 crew's own imaginations cause mysterious beings with unknown intentions to appear on the station.

Stardate: 46925.1. Odo and Lwaxanna Troi come to a mutual understanding when a computer malfunction causes them to become trapped in a turbolift.

Stardate: 46922.3. An alien "telepathic matrix" causes the DS9 crew to re-enact an ancient power struggle, leading Kira to attempt mutiny and overthrow Sisko.

A Cardassian suffering from Kalla-Nohra, a disease that indicates he served in a labor camp, visits DS9. Kira is determined to convict him as a war criminal.

Stardate: Unknown. The Federation and Bajoran people of DS9 fall into conflict when a Bajoran religious extremist comes to the station and challenges the secular teachings of Keiko O'Brien's school.

Stardate: Unknown. Word that a previously thought dead Bajoran resistance legend is still alive sends Kira and Chief O'Brien to Cardassia IV to rescue him; meanwhile "The Circle", a sect of the Bajoran provisional government that is intent on wiping out alien influence, is sneaking into power.

Stardate: Unknown. Kira spends time with Vedek Bareil on Bajor just as "The Circle" begins arming themselves from a mysterious source.

Stardate: Unknown. As a "Circle"-led Bajoran military tries to occupy the station, a skeleton crew led by Sisko fight to reveal "The Circle's" big secret before they are forced to evacuate themselves. Meanwhile, Kira and Dax lead a mission to reveal the truth about "The Circle" on Bajor.

Stardate: 47182.1. A jealous Trill, who had waited his entire life to receive a symbiont but never had, decides to steal one. . . Dax's!

Stardate: 47177.2. Political heat rises on the station as Bajorans enter the station with orphaned Cardassians they have adopted.

Stardate: 47229.1. A new arrival to the station with a special gravity-based disability appeals to Bashir's heart; meanwhile an old associate of Quark's comes to the station to kill the barkeep.

Stardate: Unknown. A female Ferengi, posing as a male to be available to participate in business (a rule STRICTLY forbidden by the Ferengi government), falls for Quark during very important negotiations between the Ferengi and a Gamma Quadrant race.

Stardate: 47282.5. Odo relives some terrible and tragic memories of a past investigation when he was the constable on Cardassian-occupied Deep Space Nine, then named Terok Nor.

Stardate: 47329.4. While noted scientist Gideon Seyetik is preparing for an ambitious project, re-igniting a star, Sisko is intrigued by a woman who keeps disappearing.

Stardate: 47391.2. A race that has been conquered twice over, one of the conquerors being the mysterious Dominion, comes to the station seeking aid and a new home.

Stardate: Unknown. Quark meets his match when a new rival opens a casino opposite Quark's Bar on the Promenade; meanwhile the station is suffering issues of high improbability.

Stardate: 47391.7. Odo and Dr. Mora Pol, Odo's 'father', discover a life form similar to Odo on a Gamma Quadrant planet.

Stardate: 47529.4. Chief O'Brien, who still doesn't like the good Doctor Bashir, must rely on him when the two are stranded on a planet and O'Brien is infected with a deadly, fast moving disease.

Stardate: 47581.2. Chief O'Brien's world is turned upside down when for no reason whatsoever he is being ignored by his family and friends and is being closed out of every essential job on the station.

Stardate: 47573.1. Sisko and Chief O'Brien discover a colony that lives without technology.

Stardate: 47603.3. Odo and Dax investigate the mysterious disappearance of people from a village. Kira tries to keep a close eye on Quark, while Vedek Bareil unexpectedly visits.

Stardate: Unknown. A Trill named Arjin comes to DS9 to learn what it is to be a Trill with a symbiont but finds his teacher, Dax, to be less than he expected.

Stardate: Unknown. A Cardassian woman, who was once a former flame of Quark's, visits the station under dubious circumstances.

Stardate: Unknown. Three legendary Klingons come to DS9 to see if Jadzia Dax will participate in a Blood Oath they made with Jadzia's previous host Curzon.

Stardate: Unknown. The destruction of a Cardassian ship leads Sisko, Dukat, and Sisko's old friend Cal Hudson to the fact that there is an unofficial war between the Maquis and the Cardassians.

Stardate: Unknown. Sisko tries to resolve the Maquis crisis by preventing a war, freeing Gul Dukat and offering the defected Hudson the chance to return.

Stardate: Unknown. Dr. Bashir fights to save Garak's life when a malfunctioning Cardassian brain implant threatens to kill him.

Stardate: 47879.2. Kira and Bashir find themselves in an alternate universe.

Stardate: Unknown. Vedek Bareil is accused of having betrayed his people to the Cardassians during the occupation, and Major Kira is desperate to prove his innocence.

Stardate: 47944.2. Chief O'Brien goes through the horrific Cardassian judicial system when he is charged for an unknown crime.

Stardate: Unknown. Sisko and Quark and a strange telepathic woman are arrested by Jem'Hadar, soldiers of the Dominion.

Stardate: 48213.1. Instead of waiting for the Jem'Hadar to attack, Sisko wants to try a different approach. He wants to take a new class starship to try to find the Founders.

Stardate: 48213.1. Odo has found his home and is introduced. Meanwhile Sisko finds out peace talks between the Dominion and the Federation have already started.

Stardate: Unknown. Quark tries to boost his reputation by taking credit for the accidental death of a Klingon in his bar, but lands himself in the middle of a Klingon political struggle.

Stardate: Unknown. The Trill homeworld is the setting, as Sisko and Bashir take Jadzia home for treatment when she begins experiencing hallucinations after playing a tune she can't recall.

Stardate: Unknown. Kira finds herself on Cardassia as a Cardassian. She is told she is called Iliana Ghemor and was a Cardassian spy.

Stardate: Unknown. Odo tries to bond with an alien child Quark finds in a load of salvage, while Sisko tries to break his son's relationship with a 20 year old Dabo girl.

Stardate: Unknown. The station goes into lockdown and the crew is endangered when an old Cardassian security program is accidentally activated.

Stardate: 48423.2. Dax falls in love with one of the residents of a multi-dimensional planet, while on DS9 an alien requests a holosuite program of Kira from Quark.

Stardate: 48467.3. The DS9 crew welcomes a visit from William Riker of the Enterprise, but the lieutenant’s hidden agenda leads to a tense standoff deep in Cardassian space.

Stardate: Unknown. As Lwaxanna Troi visits the station for a Bajoran festival, the crew is stricken with intense romantic attractions to one another.

Stardate: 48481.2. Sisko, Bashir and Dax are accidentally sent to San Francisco in the 21st century due to a transporter malfunction, and must figure out how to get back without changing the time line.

Stardate: 48481.2. Sisko is forced to take the place of a key historical figure on Earth in 2024 in order to preserve the timeline.

Stardate: 48498.4. Dr. Bashir must use extraordinary measures to prolong Vedek Bareil's life long enough to allow Bareil to complete sensitive peace negotiations between the Bajorans and the Cardassians.

Stardate: 48521.5. After chasing a fugitive into a cave, Kira gets stuck and is slowly encapsulated by a growing crystal stone while Odo tries to figure out how to free her.

Stardate: 48543.2. Sisko faces a conflict between his Starfleet duties and his role as the Bajoran Emissary when an ancient Bajoran prophecy predicts that a joint Federation-Cardassian project will lead to the destruction of the wormhole.

Stardate: Unknown. Grand Nagus Zek is acting bizarre by giving away money and rewriting the Rules of Acquisition. Quark attempts to get the old Nagus back.

Stardate: Unknown. While a Romulan delegation tries to get information about the Dominion, O'Brien gets visions of unpleasant things that are about to happen in the future.

Stardate: Unknown. After being attacked in the infirmary, Dr. Bashir has a dual mystery on his hands: what has happened to the station while he was out and why is he aging so rapidly now?

Stardate: Unknown. Sisko is kidnapped to impersonate his deceased, mirror universe self to gain Jennifer Sisko's loyalty in the Rebel Alliance.

Stardate: Unknown. After an attempt is made on Garak's life, Odo conducts the investigation on who tried to murder the Cardassian tailor - and why.

Stardate: Unknown. Now rejoined with his former mentor, Garak is ordered to interrogate Odo about the secrets of his people, while the joined Romulan/Cardassian attack fleet moves towards the Founders' home world on a mission of destruction.

Stardate: Unknown. Sisko rebuilds an ancient Bajoran space vessel from the blueprints, and he and Jake take the ship on a trip, attempting to prove that the ancient Bajorans went beyond their solar system without warp drive.

Stardate: Unknown. Quark and Rom return to the Ferengi home world because their mother has broken the law - by wearing clothes and earning profits, forbidden for women in Ferengi society.

Stardate: Unknown. News arrives that Kai Winn has also become Bajor's political leader. She asks Kira to negotiate with an old resistance friend about returning soil reclamators.

Stardate: Unknown. Dax asks the crew to join her Zhian'tara ritual. The memories of her former hosts will take over their bodies. Nog is preparing for Starfleet Academy.

Stardate: 48959.1. The Defiant is off to show the Federation's presence to the new Tzenkethi government. While underway the ship malfunctions and Bashir is suspected of sabotage.

Stardate: 49011.4. When the Klingons bring a task force to DS9, Captain Sisko sends for Starfleet's lone Klingon officer, Worf, to uncover the mysterious intentions of their presence.

Stardate: 49011.4. Sisko becomes uncomfortable when the Klingons station a task force to help defend against the Dominion. Worf is summoned to find out their true intentions.

Stardate: Unknown. Melanie, an aspiring writer, wants to know why Jake Sisko stopped writing at 40. Jake tells how his father died in an accident and then suddenly reappeared.

Stardate: 49066.5. Bashir is asked to help a group of renegade Jem'Hadar break their addiction to ketracel white. Meanwhile Worf is dissatisfied with the way Odo runs security.

Stardate: Unknown. Kira and Gul Dukat go after the lost prison ship Ravinok. Dukat has a secret. Meanwhile Kasidy Yates tries to find work near Bajor, leaving Sisko uncomfortable.

Stardate: 49195.5. Lenara Kahn, the new host of the wife of Dax's former host Torias, comes to the station. While they're not allowed to renew their relation, there's still a spark.

Stardate: 49263.5. A damaged Defiant must play a dangerous game of cat-and-mouse with two Jem'hadar ships inside a gas giant.

Stardate: Unknown. Quark and Rom take Nog to Earth and Starfleet Academy, but a malfunction with the ship takes the crew back in time, to Roswell New Mexico in 1947.

Stardate: Unknown. Worf, Dax and the Klingon Dahar master Kor set out to find an ancient lost relic: the Sword of Kahless.

Stardate: Unknown. When an transporter emergency turns the command crew into holosuite characters, Bashir's James Bond fantasy takes on a deadly reality.

Stardate: 49170.65. Sisko travels to Earth when a bombing at a Federation conference is determined to be the work of Changelings.

Stardate: Unknown. When Starfleet institutes martial law to combat the Changeling Menace, Sisko begins to question if the Dominion is the real threat.

Stardate: Unknown. First Minister Shakaar visits the station, despite a threat of assassination. He falls in love with Kira much to Odo's dismay.

Stardate: Unknown. Dukat returns, stripped of his prestige, to escort Kira to a Cardassian conference about the Dominion. But an attack by a Klingon raider may give Dukat a chance to redeem himself in the eyes of his government.

Stardate: 49556.2. Worf's brother Kurn asks him to perform a death rite to regain his lost honor. Meanwhile Kira and O'Brien investigate Klingon activity near the Bajoran border.

Stardate: Unknown. Unfair working conditions and pay cuts cause Rom to organize a union of the employees of Quark's Bar. Meanwhile Worf still finds it hard to settle on the station.

Stardate: Unknown. A man claiming to be the emissary comes through the wormhole. Sisko is happy to give up his position. Meanwhile Keiko returns and O'Brien stops spending time with Bashir.

Stardate: 49665.3. When Worf destroys a civilian shuttle during an engagement with the Klingons, an extradition hearing is held to see if he must face charges.

Stardate: Unknown. O'Brien tries to re-integrate to life on the station after serving 20 years in a virtual prison.

Stardate: Unknown. When the Mirror Universe counterpart of Sisko's deceased wife lures Jake to the other side, Sisko must follow and help the human resistance against the Alliance's forces.

Stardate: Unknown. A mysterious woman approaches Jake about his future as a writer. Odo promises to do whatever it takes to help Lwaxana Troi keep her baby over the father's wishes - even if it means marrying her himself.

Stardate: Unknown. Sisko must face betrayal when evidence surfaces that Kasidy is smuggling for the Maquis. Meanwhile Garak makes acquaintance with Ziyal.

Stardate: 49904.2. A renegade group of Jem'Hadar plunders Deep Space Nine. Sisko agrees to a combat operation with loyal Jem'Hadar to prevent the renegades completing a planetary gateway.

Stardate: Unknown. Bashir tries to help a planet in the grips of a Dominion-engineered plague that guarantees a painful death.

Stardate: Unknown. Quarks hears on Ferenginar he is going to die. Rom convinces him to sell his remains. After an accident, Bashir has to move Keiko's baby to Kira's womb.

Stardate: 49962.4. Odo is suddenly struck by illness. He is barely able to hold shape. Bashir and Odo see no other alternative then going to the Founders. Garak wants to come along.

Stardate: Unknown. With the war between Klingons and Federation intensifying, Sisko must make a plan to expose Gowron as a changeling. Odo is still having trouble with becoming a solid.

Stardate: 50049.3. The crew find a crashed Jem’Hadar ship and work to repair it and capture it for the Federation, but are confronted by a Dominion force determined to recover the ship’s cargo.

Stardate: Unknown. While Worf helps Quark to pursue his former wife Grilka, O'Brien and Kira grow uncomfortably close to each other.

Stardate: Unknown. Jake, reporting from the front lines, sees what war truly is.

Stardate: Unknown. An alien entity has possessed Keiko's body and is holding it hostage until O'Brien completes an assignment for it.

Stardate: 4523.7. In this celebration of the 30th anniversary of The Original Series, the disgraced Klingon spy Darvin travels back in time to undo his century-old defeat by James Kirk. The DS9 crew must track him down and stop him, while blending in with the crew of the original Enterprise NCC-1701.

Stardate: Unknown. While vacationing on Risa, Worf and Dax meet a group of fundamentalist protesters who claim that the Federation has gone soft.

Stardate: Unknown. Sisko, Dax, Odo and Garak find themselves in the past when the Cardassians controlled the station, and a crime that Odo investigated may be the key.

Stardate: Unknown. When Odo and Quark crash land, they must put aside their differences to climb a mountain to signal for help. Jake and Nog try to be roommates, but their different styles clash.

Stardate: Unknown. After a brain injury, Sisko begins experiencing powerful visions through time. He dives fully into the role of the Emissary, while becoming obsessed with finding a legendary Bajoran ruin.

Stardate: 50416.2. A mysterious assassin begins wiping out all the members of Kira's old resistance cell.

Stardate: Unknown. The discovery of an infant Changeling gives Odo a chance to put right the trauma of his own upbringing, while his “father” Dr. Mora insists on a more clinical approach.

Stardate: 50485.2. When the traitorous Eddington returns, Sisko will go to any lengths to capture him.

Stardate: Unknown. A coded message from the Gamma Quadrant leads Garak to believe his mentor, Enabran Tain, is still alive. He and Worf seek him out, only to discover something much worse: a Dominion invasion fleet poised to attack the Alpha Quadrant.

Stardate: 50564.2. The station readies for a Dominion attack. Worf and Garak meet some unexpected friends in a Dominion Prison camp.

Stardate: Unknown. Dr. Bashir is selected to be the model for the next-generation of Emergency Medical Hologram (EMH). But he balks when his parents are invited to the station to be interviewed by the EMH programmer, Dr. Zimmerman. There is a dark secret in his family that he's afraid that his parents will reveal.

Odo helps a woman hiding on the station from organized criminals, but quickly develops a personal interest in the case.

Stardate: Unknown. Quark must wrestle with his conscience when he becomes involved with arms merchants.

Stardate: 50712.2. When a Cardassian official that thinks of Kira as his daughter is dying, he agrees to reveal all he knows to her. But the experience dredges up Kira's memories of her own father's death.

Stardate: Unknown. Quark doesn't know whether to be panicked or overjoyed when he learns that his mother is the new lover of the Grand Nagus.

Stardate: Unknown. Dax and Worf accompany Martok on his first command since being held by the Dominion. But the ship they are given hasn't seen victory in months and the crew is near mutinous.

Stardate: 50814.2. The DS9 crew discovers a colony that, due to a time travel accident, turns out to be inhabited by the crew's own descendants.

Stardate: Unknown. Sisko learns that the Maquis are planning a devastating attack on Cardassia, and must rely on the traitor Eddington to help him prevent it.

Stardate: Unknown. While salvaging components from DS9's sister station, the crew run afoul of a "surprise" left behind by the Cardassians.

Stardate: 50929.4. Jake has his heart set on a vintage Willie Mays baseball card as a present to cheer up his father, whose spirits are flagging from the ongoing conflict.

Stardate: 50975.2. Sisko decides to mine the wormhole to prevent further Dominion ships crossing into the Alpha Quadrant. This provokes an attack by the Dominion and the Cardassians, and a desperate last stand on Deep Space Nine.

Stardate: Unknown. Borrowing a captured Jem'Hadar attack ship, Sisko and crew embark on a mission to destroy the hidden base where all of the ketracel-white is stored for the entire Alpha Quadrant.

Stardate: Unknown. Sisko and his crew crash on a barren world when their commandeered Jem'Hadar ship is shot down. They encounter Jem'Hadar who crashed there earlier, and have taken Nog and Garak hostage in exchange for medical aid for their Vorta overseer.

Stardate: Unknown. Serving with his recruit son aboard a Klingon vessel, Worf finds his relationship with his son strained. Meanwhile, strained relationships abound on DS9 between Major Kira and Gul Dukat.

Stardate: 51145.3. After forming an attack plan on the Dominion, Sisko relinquishes command of the Defiant to Dax after accepting a promotion. On DS9, the resistance faces discovery when Odo links with another changeling.

Stardate: Unknown. Sisko mounts an attack to re-take DS9, while Rom faces charges as an enemy of the Dominion state.

Stardate: Unknown. The Federation attacks DS9 in hopes of keeping the mine field in the wormhole intact, while the Dominion waits entrance to the Alpha Quadrant from the other side.

Stardate: 51247.5. Suddenly desiring to wed within the week on DS9, Worf and Jadzia go through their own Klingon rituals: Worf on a four day bachelor party with the male members of the crew & Jadzia deals with her prospective mother-in-law, who totally opposes the idea of "an alien" marrying into her Klingon household.

Stardate: Unknown. Major Kira takes a romantic interest in a Bajoran radical from the other universe who transports himself into her universe and onto DS9.

Stardate: Unknown. A group of genetically engineered humans are brought to Dr. Bashir on DS9 in hopes of integrating them with the rest of the universe.

Stardate: Unknown. At the request of the Grand Nagus, Quark puts together a mission to rescue Quark's mother, who is in the hands of the Dominion.

Stardate: 51408.6. After being attacked by Cardassian forces, Sisko gets stranded with a very psychotic Gul Dukat, who was being transported to his trial. Meanwhile the crew of the Defiant races to rescue survivors.

Stardate: Unknown. A former patron of Quark's bequeaths everything to him.

Stardate: Unknown. Captain Sisko has a full sensory vision of himself as an under-appreciated science fiction magazine writer in 1950s America.

Stardate: 51474.2. An attack by the Dominion on Sisko's ship endangers Dax and her crew aboard as she leads them into an anomaly that shrinks them to a very minute size. Unfortunately, they were being held stable by Sisko within a tractor beam, which was discontinued during the attack.

Stardate: Unknown. Chief O'Brien goes undercover to infiltrate an Orion crime ring.

Stardate: 51597.2. Worf and Jadzia travel to the badlands to procure some information on the Dominion from a traitorous Cardassian. Bashir wants to engage in a holo-suite spy simulation, but O'Brien prefers to brush up on his tongo game after watching Jadzia lose to Quark.

Stardate: Unknown. After receiving some disturbing information from Gul Dukat, Major Kira seeks Sisko's approval as Emissary to travel back in time to find out the truth about her mother. Meanwhile, Chief O'Brien and Dr. Bashir discuss a holosuite program surrounding the Battle of the Alamo.

Stardate: Unknown. Dr. Bashir's plans to attend a medical conference at a breezy resort are canceled when Starfleet Intelligence boards DS9, suspecting the doctor of treason.

Stardate: 51721.3. To save the Federation in a critical scheme, Sisko comes to realize that he must violate its fundamental principles to do so.

Stardate: Unknown. Odo is schooled in the ways of romance by a holographic programmed lounge singer.

Stardate: Unknown. Sisko runs afoul of Kai Winn when he removes a Bajoran artifact from an archaeological dig after he receives a vision from the Prophets.

Stardate: 51825.4. Jake and Nog's runabout comes under attack from the Jem'Hadar. They are rescued by the Valiant, a ship manned by Red Squad, a elite group of young Starfleet cadets.

Stardate: Unknown. Quark's mother and the Grand Nagus show up on DS9, announcing a new amendment to the Bill of Opportunities he has instituted on the home planet of Ferenganar, and then follows up with the announcement, that, due to the new amendment, chaos has followed and he has been deposed.

Stardate: Unknown. The Chief's daughter gets caught in a time displacement and when they get her back, she is considerably older.

Stardate: 51948.3. As the Defiant races to a shipwrecked officer who is days away, the crew keeps in contact with her. Meanwhile, Jake follows Quark's latest scheme for story research.

Stardate: Unknown. When Sisko is picked to head up an attack on the Cardassian homeworld, the Prophets appear to him in a vision, warning him of impending doom if he leaves the station.