While visiting the ageing former Bucky, David is attacked by an android. Cap investigates and finds out the android Adam II, who many years ago killed substitute Cap Naslund, may be behind things. Together with Naslund's grandson and the original Human Torch, Cap tries to solve the mystery.
Cap and his friends continue the search for Adam II, the android that killed Captain America Bill Naslund in 1946. But is Naslund's grandson what he seems?
Posing as Cap, Adam III takes over all drone facilities of the military. The Bill Naslund part of Adam's programming rebels and Cap defeats Adam III. Cap and Torch then honor Davis.
Captain America and Bucky appear to have been killed by Baron Zemo. Hitler is killed by the Human Torch. Union Jack and Spitfire save Churchill. The Invaders learn of Captain America's death, and leave Union Jack and Spitfire in England. President Truman introduces the new Captain America (Spirit of '76) and Bucky (Fred Davis) and adds Whizzer and Miss America to the team. After Japan surrenders, the team is renamed the All-Winners Squad. After fighting Isbisa, they fight the android Adam II and his plot to kill and replace JFK. The second Captain America is killed and replaced by the Patriot.