Two years once the events of The Avengers, Steve Rogers lives in Washington, D.C. and continues to figure for undercover work agency S.H.I.E.L.D., however struggles to adapt to up to date society. once meeting and befriending war veteran and posttraumatic stress disorder counsellor guided missile Wilson on a morning jog, Rogers is termed to assist save a S.H.I.E.L.D. vessel from Algerian pirates junction rectifier by Georges Batroc.Aboard, he discovers fellow agent Natasha royalty extracting information from the ship's computers, creating him question whether or not he ought to trust S.H.I.E.L.D. At S.H.I.E.L.D.'s headquarters, the pattern, Nick Fury introduces Rogers to Operation: Insight, 3 Helicarriers joined to spy satellites and designed to pre-emptively eliminate threats.
Rogers later visits the old Peggy Carter at a home.Later, Fury is denied access to info on Operation: Insight, and on his thanks to rendezvous with Maria Hill he's ambushed by assailants disguised as law enforcement officials.
A mysterious assassin referred to as the Winter Soldier blows up Fury's SUV. Fury escapes and sneaks into Rogers' housing, however once handing Rogers a USB flash drive he's gunned down by the Winter Soldier. Rogers offers chase, and his neighbor reveals herself as S.H.I.E.L.D. agent Sharon Carter. Fury seems to die in surgery, and Hill recovers the body.
The next day, Rogers is summoned by senior S.H.I.E.L.D. official Alexander Pierce. once Rogers withholds Fury's info, Pierce brands him a fugitive. afraid by the agency, Rogers meets with royalty, associated victimisation information within the flash drive they discover an previous S.H.I.E.L.D. underground base inside associate abandoned U.S. base of operations in New Jersey. They activate a mainframe computer containing the preserved consciousness of Arnim Zola, World Health Organization reveals that once S.H.I.E.L.D. was based once warfare II, HYDRA in secret operated inside their ranks. Their set up is to use the new Helicarriers to by selection kill twenty million folks whom Zola's data-mining rule has known as potential threats. Rogers and royalty narrowly escape death once a S.H.I.E.L.D. missile destroys the bunker.
They enlist the assistance of Wilson, and later acquire the classified "Falcon" flight-exoskeleton he once controlled. Ambushed by the Winter Soldier — whom Rogers believes is James "Bucky" Barnes, his relief World Health Organization was probable KIA throughout WWII — they're captured by S.H.I.E.L.D. however reclaimed by a disguised Hill. She leads them to a den wherever they discover Fury is alive and designing a mission to forestall Pierce from launching Operation: Insight. The mission involves commutation the managementler chip contained inside every Helicarrier to override their satellite control.At the pattern, Pierce invitations the members of the globe SC to the launch of the Helicarriers, solely to carry them surety and reveal HYDRA's true motives.
Rogers and Wilson storm the premises and replace the controllers on the primary 2 Helicarriers, however encounter the Winter Soldier at the third. once destroying Wilson's wings and forcing him to parachute out of the Helicarrier, the Winter Soldier fights Rogers, with Rogers attempting to revive Bucky's reminiscences. Meanwhile, Fury and royalty confront Pierce and force him to unlock access to S.H.I.E.L.D's information thus royalty will expose HYDRA's motives to the general public. once a short conflict, Fury shoots Pierce dead. Aboard the third Helicarrier, a wounded Rogers replaces the ultimate controller, permitting Hill to override the satellite operation and have all 3 vessels destroy each other. The Helicarrier carrying Rogers and therefore the Winter Soldier crashes into the aspect of the pattern, wherever Wilson battles compromised agent Rumlow, World Health Organization had earlier tried to capture Rogers.