LF Tony finding Bucky pre-CA:WS
Tony finds out his parents were murdered and goes after the Winter Soldier. Tony is confused by Bucky's reaction(or lack of reaction) to him saying he's there to execute him. Tony figures out that Bucky is a prisoner, not a volunteer, and takes him home after blowing up the base, making Hydra think Bucky's dead. I think during CA:WS Bucky goes to help Steve in his Hulk pajamas. I'm pretty sure it was epically long and might have been part of a series.