While Elizabeth works to successfully broker a peace treaty between China and Japan, a Chinese student seeking political asylum threatens the deal. Meanwhile, tensions rise at home between Alison and Stevie during Alison's sleepover party.

When Elizabeth brings Alison with her to India on her first state department trip abroad she's thrown into crisis mode when a massive earthquake hits that causes an explosion at an American-owned factory, and she's separated from Alison during the chaos.

When the State Department goes on lockdown due to a deranged gunman outside the building, Elizabeth is confined with a delegation from Iraq whose translator threatens to reveal damaging information about her actions while in the CIA. Meanwhile, when Matt is stuck in an office with Daisy’s fiancé, Win, he spills information that he shouldn’t have.

Elizabeth pushes for the prosecution of a Bahraini diplomat after he is caught holding a maid hostage in his home. Also, Henry's father comes to visit.

Elizabeth secretly travels to Iran in an attempt to prevent a coup that could impact President Dalton’s administration. Also, she brings her staff up to speed on the investigation into Marsh’s death.

Elizabeth and President Dalton work together to solve the Greek debt crisis, but not everyone at home is happy with the agreement. Meanwhile, Henry mulls over a new job offer, and Stevie reconnects with her childhood friend, the President’s son.

When Elizabeth confronts her former friend Juliet, she flashes back to when then-CIA Director Dalton offered her a job that would have changed the course of her life. Also, Stevie and President Dalton’s son, Harrison (Jason Ralph), begin a relationship that will have consequences.

Elizabeth takes advice from former Secretary of State Madeleine Albright and ignores President Dalton's recommendation on how to negotiate the safe return of a Sate Department employee who was kidnapped in Afghanistan. Meanwhile, Henry is having trouble persuading a student to spy for the U.S. government.

Elizabeth finds herself pushed out of the President's inner circle after she disagrees with his response to the growing tension with Russia. Also, when incriminating photos of Stevie and Harrison surface, Elizabeth and Henry must deal with the aftermath and try to protect their daughter from the media.

With the support of President Dalton, Elizabeth attempts to get the Senate's support for a history-making effort to lift the Cuban trade embargo. Also, Henry and Alison bond while touring Havana together.

After they uncover a secret that could ruin Maria Ostrov’s reputation, Elizabeth and President Dalton head to Switzerland to meet with her and use the information as leverage to find a peaceful solution to the escalated conflict with Russia. Also, Dmitri requests to be released from his duties as a spy.

After his father’s death, Henry’s family uncovers shocking secrets that open old wounds for them, including his grieving sister Maureen, who blames Henry for not spending enough time at home. Also, Russell keeps important information from Elizabeth’s team at the State department.

After an Italian warship answers a distress call from a ship carrying Libyan refugees, Elizabeth is given 20 minutes to decide whether to question a passenger who claims to know the whereabouts of Jibral Disah, the most-wanted terrorist in the world. Also, Stevie brings her boyfriend Jareth home to meet her parents.

Elizabeth learns that a member of the inner circle of the terrorist group Boko Haram has fallen ill with a deadly virus and, by leveraging his weakness, she formulates a plan to get them to release a group of schoolgirls they are holding captive. Also, Henry gets new information on the whereabouts of Jibral Disah that leads them closer to pinpointing his location.

The United States debates enacting a “render safe” mission to secure nuclear weapons that belong to the Pakistani government before it collapses, while the Murphy Station pursues the terrorist Jibral Disah.

When a storm destroys a naval base in Bahrain, Elizabeth urges President Dalton to reexamine his approach to climate change and his overall foreign policy, something that could jeopardize his re-election campaign. Also, the McCords worry that their family is being stalked when they discover Jason’s laptop may have been hacked.

When an imminent U.S.-France state dinner is jeopardized after a CIA operative is captured by French intelligence, Elizabeth must negotiate the operative’s release while keeping the event on track.

As President Dalton eagerly awaits voting results on Election Day, Elizabeth uncovers information that could put the U.S.’s peace deal with Iran in jeopardy.

When the Mongolian government sends Elizabeth a horse as a gift, she thinks accepting it could upset other Asian countries, but she stirs up more controversy when she considers returning it to Mongolia. Also, Gov. Sam Evans threatens to sue Ohio for putting President Dalton on the election ballot, and Stevie has an interesting first day as Russell’s new intern.

When the upcoming marriage of two star-crossed lovers from Colombia is in jeopardy, Elizabeth works to reunite the son of the Colombian president and the daughter of the rebel leader, whose union is at the heart of an important peace deal after years of civil war. Also, Henry prepares to send his operative undercover, Jay deals with his tenuous marital situation, and Daisy makes a shocking discovery regarding Kevin.

When a computer sting uncovers the possible mole in the CIA arms smuggling ring, Elizabeth’s questioning of the suspect makes her think that a larger, more dangerous force is behind the operation. Also, Henry worries that the doomsday cult is drugging his embedded operative, and Elizabeth and her State Department staff come up with an unorthodox approach to solving black rhino poaching in Namibia.

As the U.S. hunts for the person believed to be behind the CIA arms smuggling case, Elizabeth and her team must work to save Jay when he’s kidnapped in Nice, France, during a fact-finding mission into the suspect. Also, Henry suspects the doomsday cult is planning an attack in Israel, and Jason dupes his parents into giving him money for an expensive calculator when he’s really using it to impress a girl.

When the assistant vice minister of Timor-Leste suddenly dies during a meeting with Elizabeth on the first day of the U.N General Assembly, she becomes suspicious after the president of Timor-Leste ships the body back without a proper investigation. Also, a “fake news” story surfaces claiming Elizabeth is responsible for the minister’s death, and Dmitri returns to work with Henry.

When a Russian dissident flees to the U.S. after contracting smallpox, Secretary of State Elizabeth McCord and retired U.N. Ambassador Kat Sandoval must work with Russian Foreign Minister Konstantin Avdonin to contain the outbreak.

Secretary of State McCord struggles with the realization that she may need to advise the Afghan government that a compromise with the Taliban may be better than a war with them. Also, Henry uses Dmitri as bait to convince a Russian spy to help the U.S., and Daisy returns from maternity leave and decides to finally tell Joe’s mother about the baby.

Elizabeth seeks creative solutions when the president of Sri Lanka's psychic convinces him to not move forward with a trade agreement with the U.S. Also, Alison grapples with guilt for missing the warning signs after her college roommate attempts suicide, and Henry makes an abrupt career decision.

As the 20th anniversary of the American embassy bombing in Mali approaches, emotions run high among the State Department staff, who had personal connections to lives lost that day, including Elizabeth, who must decide if the U.S. should lift sanctions against the country deemed responsible. Also, Henry tries to help Jason break up with Piper.