The world believes Bucky Barnes sacrificed his life for the greater good, but in the shadows, the Winter Soldier lives on - deadlier than ever. His latest mission takes a devastating turn when a former Soviet sleeper agent resurfaces and abducts the Black Widow. Brainwashed and weaponised against her allies, Natasha Romanoff is no longer S.H.I.E.L.D.'s top spy - she's its greatest threat.