Jane Foster struggles to embrace the 21st century world she’s been living in since they thawed her out two years ago. After the battle of New York, Jane agrees to work for S.H.I.E.L.D. under Director Nick Fury’s command along side Natasha Romanoff. During a mission, Jane discovers Natasha’s hidden agenda to extract information for Fury. She later learns that it is for Project Insight; helicarriers linked to spy satellites, designed to preemptively eliminate threats.
When a mysterious assassin attacks Nick Fury, he seeks refuge in Jane’s apartment. It was then that he warns her that S.H.I.E.L.D. has been compromised. He is soon gunned down when handing her a flash drive. Jane catches glimpse of the killer as she goes after the assassin. The unknown assailant was fast, strong, a woman, and most interestingly she had a metal arm. At the hospital, Foster joins Romanoff and informs the spy of her discovery; shocked by the description, Natasha realizes the assassin was the mysterious cutthroat known as the Winter Soldier. A killer known throughout time thought to be an urban legend.
Unwilling to exchange the reason as to why Fury was in her home, senior S.H.I.E.L.D. official Alexander Pierce brands them both as fugitives. Now hunted, Foster and Romanoff use the data in the flash drive. There they find files leading them to a secret S.H.I.E.L.D. base. After driving to the coordinates the two agents activate a supercomputer long hidden within a secret room on the base. They awaken the consciousness of Arnim Zola, revealing the chaotic role Hydra has had in history in hopes humanity will one day surrender their freedom.
With that information they seek out the help of Sam Wilson, a former USAF para-rescue woman Foster had recently befriended, and her powered “Falcon” wing-pack. The trio force Jasper Sitwell, believing him to be a Hydra mole, to divulge Zola’s algorithm and to reveal to them who the organization is really targeting; anyone who might become threats to Hydra. Ambushed by the Winter Solider, the trio tries to defend themselves against her.
Jane Foster and the Winter Soldier go against one another in fierce combat, but when Jane manages to tear off the assassin’s mask she recognizes her best friend, Darcy Lewis, standing before her. Shocked by Darcy’s appearance Jane questions if it’s really her but only received a steely,