Four months after the events of the showdown between Sylar and Peter, new Heroes emerge. These include brother and sister Alejandro and Maya. Hiro remains in the past, but what will come of this? Someone dies and someone isn't dead. Claire and her father and the rest of their family get a new life.

Peter falls in with Irish gangsters who know about his past. Hiro works to contain the damage caused by his journey into the past. Kensei's power will be revealed. Suresh locates and cures the Haitian. Matt investigates the murder of Mr. Nakamura. West comes to know of Claire's powers. Maya and Alejandro enter Mexico and find their powers more of a hindrance than a help.

Suresh finds an undiscovered Isaac Mendez painting that shows someone's death; Maya frees Alejandro from a Mexican jail; in the past Hiro discovers something new about Kensei; and Niki and Micah leave Las Vegas to get away from their past. Claire and West take a little trip.

Monica starts to exhibit new abilities while working with Micah, Nana, and Damon. Nana is the grandmother of Micah, Monica, and Damon. They all currently reside in New Orleans. Matt asks Molly to locate the man in her dreams. He may be the newest threat to the Heroes. Maya and Alejandro continue their trek to the U.S. Both Claire and her father are suspicious of one another. Angela reveals a lot of her secrets.

A woman named Elle is searching for Peter. Ando looks for Hiro in the past. Matt looks for the man in Molly's dreams. HRG takes another step in hopes of protecting his family and himself.

Peter goes on a search. West convinces Claire to stand up to someone. Hiro struggles with his feelings for Yaeko. Suresh has more problems with the Company. HRG tries to locate more of Isaac's paintings. Alejandro doesn't trust Sylar.

Peter and Caitlin learn about the endstage effects of the Heroes virus. Many of the Heroes work together to fight the Nightmare Man. West is shocked to the identity of Claire's father. Hiro and Kensei's journey comes to an end.

The events of the "missing four months" are explored. Maya and Alejandro must go on the run, it is explained how Peter ended up in Ireland and what happened to Nathan, Nikki, and D.L.

Mr. Bennet prepares to move his family when he thinks the Company has found them, but Claire doesn't like the idea. Hiro returns to the present and upon discovering his father's death, travels back in time to stop it. Meanwhile, Matt works to master his new mental abilities.

Peter travels to Primatech in Texas to destroy the virus, but not everything is what it seems. Hiro continues the pursuit of his father's killer, while Matt pursues the last Company member in the photo. Nikki is reunited with Micah but has bad news, while Maya has to choose to remain with Alejandro, or go with Sylar.

In Texas, Peter faces off against former friends due to Adam’s misleading story about the Shanti virus. Micah enlists the help of his mother to rescue Monica. Maya is shocked when she learns the truth about her new friend Sylar. Elle tries to make her father proud.

After a look into the future, Nathan's shooter is revealed. Matt chases him and winds up in a desert. Hiro receives an important message from his father. Sylar visits Claire. Maya gives Mohinder an idea for his research. Nathan recovers and gets a visit from Linderman.

Sylar goes to the Company and inadvertently releases 12 super-powered criminals in a fight with Elle. Future Peter tries to fix his mistake. Angela takes over the company. Claire learns more about her powers. Hiro and Ando travel to Paris to track down the speedster who robbed them. Maya discovers that Mohinder's injection has changed him. Matt meats Usutu, an African with a familiar power.

HRG and his new partner go to a local bank heist with four villains; including Peter being trapped in one of them. Hiro and Ando track Daphne to Germany, and meet the Haitian. Tracy Strauss goes to New Orleans to find out more information about Niki. Meredith teaches Claire a lesson about fighting. Usutu shows Matt a series of paintings about him.

Peter travels to the future and adopts a dangerous ability in order to try to save the world. Meanwhile, Mohinder struggles with his continuing evolution from the formula, and Hiro and Ando re-unite with an old enemy.

Claire decides to take on one of the villains herself, but she may not be as invulnerable as she believes. Nathan and Tracy search for the truth about their origins. Maya makes a shocking discovery. Hiro and Ando look for help in the most unlikely places.

Villains Knox and Daphne are on a quest to recruit Hiro and others to the Pinehearst fold. Angela and the Company are paralyzed from recent events. Peter goes to Pinehearst searching for answers but is stunned to learn who the founder is. Claire and Sandra go on a mission to save Meredith from the clutches of Doyle, a villain with abilities to control people mentally and physically. Nathan and Tracy try to trace their origins with Mohinder's help.

Trapped, Nathan and Tracy must fight to save their lives against Suresh, who has changed dramatically. Elle returns with shocking news for Claire and her family. Meanwhile, Angela tries to convince Sylar to save Peter; Daphne is ordered to kill Matt or she will be killed herself; and Hiro questions Usutu's advice.

Hiro attempts to delve into Arthur Petrelli's past to uncover the mystery behind him creating a rival company Pinehearst and his hatred towards Angela. Sylar stricken by guilt tries to stop his murderous ways with HRG and Elle vying for his blood. Meredith's training goes up in smoke with the arrival of her brother.

Nathan learns of his father's plans, while Flint and Knox launch attacks on Hiro, Ando, Peter, and Claire. Meanwhile, Matt tries to revive Angela, Sylar meets with Elle, and Mohinder begins testing of his newest superpower formula.

The eclipse plays havoc with the heroes' powers. Arthur orders Elle and Sylar to bring in Claire. Hiro, Ando, and Matt follow Daphne to her hometown to learn what hold Arthur has on her, and Peter and Nathan travel to the Haitian's hometown to recruit him for the war with Pinehearst.

The eclipse continues to create chaos. Sylar and Elle face HRG's wrath. Peter, Nathan and the Haitian go up against Baron Samedi. Ando, Sam, and Frack try to help Hiro with his memory loss.

In order to stop Arthur, Hiro and Clair team up and travel back in time to when Kaito gave Claire to H.R.G. Meanwhile, Peter and the Haitian head out to stop Arthur, but are stopped by Sylar and Suresh has a breakthrough with the formula.

Following the showdown against Arthur, Nathan and Peter find themselves pitted against one another, and Nathan makes a decision that will have an effect on the entire world. Meanwhile, Sylar holds Claire, H.R.G., Meredith and Angela hostage at Primatech; Ando, Matt and Daphne try to rescue Hiro and find their only hope may lie in Suresh.

Three weeks after the destruction of both Primatech and Pinehearst, and the death of Arthur Petrelli, the now-villainous Nathan returns with a vengeance by persuading the U.S. President and the government to round up all people with abilities, leading to Claire, Ando, Hiro, Matt, Peter, as well as Tracy to become fugitives from the people who were their former allies.

Following a chain of unexpected events, our Heroes are on the run from their latest adversary and one of their own, Nathan Petrelli. After Matt paints a series of prophetic images, the tragic fate of someone close to him is revealed. Elsewhere, Sylar continues his search for his father and encounters a young outcast with information and an ability of his own.

Nathan's plans face exposure as Homeland Security begins an investigation under direct orders from the President of the United States. Sylar and Luke embark on a road trip to find Sylar's father, but are secretly being hunted by Nathan's agents. Life gets complicated for the Bennet family as Claire goes into action to protect a young man with abilities from being captured by HRG. Elsewhere, Matt's prophetic images lead Hiro and Ando to India and a mysterious ally comes to the aid of our Heroes

While being held hostage, HRG is subjected to Matt Parkman's unique brand of interrogation, revealing how he became involved with Nathan's government plot to capture those with abilities. Meanwhile, Matt's discoveries bring Peter face-to-face with "The Hunter"

After receiving a tip from "Rebel", Matt and Peter race to Building 26 to rescue Daphne and recover files that will expose the government's plans for those with abilities. Claire finds help from an unlikely source in smuggling Alex out of the city. As Sylar and Luke continue their road trip, Sylar begins to have memories of his father that lead him to the truth about his mother. Meanwhile, "The Hunter" puts his own agenda into action with an explosive surprise for one of our heroes.

When Sylar comes face-to-face with his long lost father, the reunion proves to be what he least expected. Elsewhere, after receiving a tip from "Rebel", Claire must decide if she will help her sworn enemy, Eric Doyle, evade capture. Meanwhile, as "The Hunter" plans to uncover the Petrelli family's secrets and take control of Nathan's operation, Matt finds himself in the spotlight and on the verge of leveling Capitol Hill.

HRG convinces Emile Danko, a.k.a. "The Hunter", to release Tracy from Building 26, in hopes that she will lead them to "Rebel". As Angela evades capture, she turns to an old friend for help. In Los Angeles, Hiro and Ando continue on their latest mission from "Rebel" to protect the newest hero.

Now that Nathan’s ability has been revealed and he has lost control of his operation, he and Claire go into hiding in Mexico. With Emile Danko now in control of the government operation, his plan to destroy everyone with abilities is set into motion as he teams up with an unlikely partner. Meanwhile, Angela and Peter seek refuge in a church and begin to mend their broken relationship.

As Danko spearheads the government operation, someone close to him is put in the line of fire. HRG’s life continues to spiral out of control and his marriage is dangerously close to the breaking point. Meanwhile, Hiro and Ando continue their road trip with a special delivery for Matt Parkman. Elsewhere, Angela Petrelli unearths the demons of her past.

As Nathan, Claire, Peter and H.R.G. help Angela uncover her past, she reveals the dark secrets that have haunted her for years. Meanwhile, Mohinder learns of his father’s involvement in a long forgotten government operation.

Sylar continues his unusual partnership and begins to have an unexpected identity crisis. Hiro and Ando take measures toward bringing down Building 26. Meanwhile, Matt’s new found fatherhood changes his priorities. Elsewhere, Nathan sets a plan in motion to right the wrongs of his government operation.

Nathan faces off against Sylar to keep him from meeting the President. Sylar has his own plans for his new partner. Meanwhile, Hiro learns that there are repercussions to regaining his ability. Elsewhere, Matt is forced to go to extraordinary lengths to protect his future with his family.