Elizabeth must decide whether to use autonomous unmanned weapons or send U.S. soldiers to bring the mastermind of the UN gas attack to justice. Also, Blake is questioned by Senator Hanson about potential campaign finance violations related to his love life, and Henry and Elizabeth search for the perfect dog.

After President Dalton hears about a sonic attack at the U.S. Embassy in Bulgaria, he thinks Russia is to blame and uncharacteristically threatens them with military force, leaving his cabinet concerned about his mental status.

Henry teams up with a Marine veteran to fight for legislation that helps Veterans Affairs provide better mental health care, but he encounters surprising resistance from Vice President Carlos Morejon. Also, Senator Hanson questions Daisy about an arrest in her past.

When a fabricated video makes it look like Elizabeth and Henry are making fun of a foreign dignitary, they struggle to convince him not to pull out of an important international agreement. Also, Stevie says goodbye to an important person in her life.

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.

The President’s plane is declared missing and Elizabeth is thrust into a situation of power she never imagined possible. Also, Henry butts heads with his new Defense Intelligence Agency handler, Jane Fellows, when he’s asked to recruit one of his Russian students for the NSA.

As tensions rise with Russia, Elizabeth, Russell and Mike B. hatch a plan to oust National Security Advisor Craig Sterling without tarnishing President Dalton with a scandal. Director of National Intelligence Ephraim Ware identifies who hacked Air Force One.

Shortly before Elizabeth is to deliver a speech at the United Nations accusing Russia for the attack on Air Force One, Henry shares information that makes her reconsider her theory.

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.

When Elizabeth receives shocking news about an important political operative, she navigates a tricky political situation with President Dalton, who she learns may be considering replacing her as Secretary of State. Also, Stevie and Jareth get engaged.

While Elizabeth is in Libya to help negotiate an end to their civil war, a tragic accident with her chauffeured car embroils her in an urgent situation to secure medical care for a gravely wounded local girl.

With a government shutdown looming, Elizabeth must think outside the box to help fund an electrical grid in a Syrian refugee camp, before riots break out in the country due to the lack of electricity and water. Also, Henry searches for Dmitri when he goes missing.

Secretary of State McCord and her staff work with the Mexican government to extradite a Mexican cartel leader to a U.S. prison in an effort to diminish the opioid crisis. But after he escapes during transport and a journalist who secured a gloating interview with him while on the lam is murdered, Elizabeth’s urgency to find the leader escalates.

Secretary of State McCord reluctantly agrees to host a holiday party in the hopes of persuading senators in attendance to pass a treaty that requires countries to destroy landmines. Also, Henry tries to find evidence that the Senate Majority Leader exchanged information with the Russians.

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.

When Vice President Hurst feels threatened that Secretary of State McCord is vying to be the next president, she attempts to set Elizabeth up for failure by promising that Americans will continue to be able to adopt Russian orphans, despite the potential ban by Russia’s president. Also, Elizabeth and Henry find out Stevie is dating Dmitri after he is followed by a Russian assassin.

Elizabeth and the team are caught in an uncertain situation when they are about to award a foreign leader with the Medal of Freedom but learn he may have known that a minority group in his country is being persecuted. Also, President Dalton doubts his ability to return to office after being cleared by his doctor, and a past family grievance is brought to light when Henry’s sister pays a visit.

Senator Morejon puts phase two of Elizabeth’s U.S./Iran arms deal in jeopardy when he asserts that Iran funneled money from phase one of the deal to fund a recent bombing that killed an American citizen. Also, Henry mulls over the option of becoming the chairman of the new military ethics department at the National War College.

Elizabeth and cabinet members brace for the fallout at home and abroad as President Dalton prepares for a retaliatory nuclear attack on a country that has reportedly just launched missiles bound for the U.S.

As Elizabeth prepares to officially declare her candidacy for president, she must deal with fallout from a news article alleging she had an affair with President Dalton during her CIA days. Also, Mike B. and Jay adjust to the growing pains in their expanded roles as campaign staffers, and Elizabeth calls for a UN criminal tribunal against Myanmar military leaders over their treatment of the Rohingya.

As Elizabeth prepares to leave the state department and announce her run for president, anti-globalist terrorists attack the United Nations delegation in Geneva who are there to sign the climate migration treaty.

Elizabeth must fend off a baseless investigation into her past that threatens to derail the first major legislation of her presidency. Also, First Gentleman Henry squirms after his appearance on The Late Show with Stephen Colbert results in heightened scrutiny of the romance in the First Couple’s marriage.

Elizabeth faces mounting protests over rising fuel costs as she prepares to throw out the first pitch at a New York Mets game. Also, Mike B. is questioned by the Senate Intelligence Committee as part of the investigation into whether the McCord campaign conspired with Iran to steal the election.

When evidence implicates Daisy in the leak of hacked information during the presidential campaign and threatens to topple Elizabeth’s presidency, Elizabeth must decide what to believe and how far she’s willing to go to uncover the truth. Also, Henry and Elizabeth host former President Dalton at the White House after his interview with Bob Schieffer.

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.