The concluding episode of Timeline's Reagan Presidency series opens in 1985 as Mikhail Gorbachev takes power as General Secretary of the Soviet Union, setting up the run of summits that reshape the Cold War. Archival footage and expert interviews trace the meetings between Reagan and Gorbachev in Geneva, Reykjavik, and Washington, following the arguments over nuclear arms reduction and the personal rapport that developed between two leaders who had spent years calling each other's country evil. The film also weighs the domestic costs of the era, including the Iran-Contra affair, against Reagan's foreign policy legacy, asking how a president who campaigned on confronting the Soviet Union ended up negotiating its de-escalation. Historians and biographers provide context on the internal White House debates over how far to trust Gorbachev's reforms. Newsreel clips of the signing ceremonies and press conferences anchor the narrative in the period, closing out a two-part series with an account of how the Cold War's final chapter was actually negotiated.