To find the source of the Super Soldier Serum, Sam and Bucky must scale a ladder of low-lifes starting in Madripoor with Zemo.

John Walker loses patience with Sam and Bucky as they learn more about Karli Morgenthau.

Sam Wilson, Bucky Barnes, Baron Zemo, John Walker, and Karli Morgenthau must all deal with the fall out from their actions.

John Walker is named Captain America, and Sam Wilson and Bucky Barnes team up against the rebel group, the Flag Smashers.