Emily Barnes is Bucky Barnes twin sister and is also best friends with Steve Rogers. She has loved Steve ever since she was a little girl. She gets into the army as an agent. Dr. Erskine chooses her to be a super-soldier along with Steve. Over the months she finds her feelings for Steve growing.
This book takes place during the Captain America: The First Avenger, Avengers, Captain America: The Winter Soldier, and Avengers: Age of Ultron, Captain America: Civil War films.