Captain America discovers that his best friend Bucky is in fact the Winter Soldier after he fell out of the plane into the waters amnesiac and was brainwashed in addition to being given a new metal arm at the end of World War II. It's up to Captain America, Falcon, Nick Fury, Agent 13 and Iron Man to free Bucky/Winter Soldier from HYDRA control.
- This story arc was briefly interrupted by Captain America (Vol. 5) #10, which was a House of M tie in.
This story arc was used as the basis for the film Captain America: The Winter Soldier.