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 alongside Steve. Over the years she finds her feelings for Steve growing. This book takes place during the Captain America: The First Avenger, Avengers, Captain America: The Winter Soldier, Avengers: Age of Ultron, Captain America: Civil War, Avengers Infinity War, and Avengers Endgame films.