Exploring the unfolding chaos of the first days of the hostage crisis, this episode illuminates the motivations and ideals of the young revolutionaries who breached the embassy walls. Events take a turn when Khomeini sanctions the takeover and the hostage-taking becomes a watershed moment of Khomeini's repressive regime.

The episode focuses on President Jimmy Carter's administration as the situation reaches a boiling point and diplomatic efforts to secure the hostages' release fail. Carter decides to initiate military action, but Operation Eagle Claw is a disaster. Eight U.S. service members die, and the fate of the hostages hangs in the balance.

The series finale finds both Iran and America in an exhausting, entrenched stalemate one year into the siege. As the Carter administration works furiously to secure a deal, the presidential election of 1980 approaches. Ultimately, the hostages are released on the day of Ronald Reagan's inauguration, and lingering questions remain about the role of the crisis in the American election. Although the U.S. hostages are ultimately returned, the individuals on all sides are impacted for life and the relationship between the two countries is changed forever.