Codename-Siren

An old friend calls you up and needs you for a mission. Little did you know, this mission wasn't just with Natasha. James Buchanan Barnes is on it too and he's the last person you ever expected to see again. Well, unless it was to rip your heart out. You and Bucky have a messy past and it'll take a lot of effort to prevent that from interfering with the mission. But maybe it won't be that bad after all...

*I DO NOT OWN MARVEL, ONLY THE CHARACTERS AND SITUATIONS I CREATE*