Agents and a Shield

Steve Rogers' search for Bucky has reached a dead end and he decides to chase down the newly formed S.H.I.E.L.D. Coulson's team is facing the disappearance of the one who betrayed them. Will teaming up with Captain America help them face the threats to the team? And what plans does Ward have for the team and the Winter Soldier? AU Begins after s2 episode "the writing on the wall"