Captain America and Diamondback are reunited after all these years - but their reunion is bittersweet, as Cap is consumed with remorse over recent cataclysmic events involving the Avengers. Meanwhile, all is not right within the S.H.I.E.L.D. organization. How is it that Nick Fury is completely unaware? And what does all this have to do with a certain Red-Skulled villain who's been lurking in the background? Plus: Finding himself a fugitive from justice, the Falcon must battle his way past elite naval operatives - even as Cap is forced to choose between his partner and his principles while suffering an enigmatic battle fatigue that replays his worst failure and presents the Scarlet Witch as his only refuge.