After defeating Zemo, Captain America and Bucky continue their advance through Europe, confronting Nazi forces. It is then that they learn about a Nazi cell to which Zemo was affiliated, known as Hydra, led by the cruel and infamous Red Skull. Allied intelligence informs them that Red Skull creates his own super soldiers and monsters. Captain America discovers this firsthand when he confronts one of these experiments, Master Man.
Realizing that stopping Master Man and Red Skull's plans will require more, Captain America joins forces with a British soldier, Union Jack, the speedster Typhoon, the android Human Rock, and the prince of Atlantis, Namor. Together they become the Invaders. The only defense capable of stopping Red Skull from reshaping the world.
