Faulty memory is faulty.
The Avengers are fighting the Chitauri and Loki swoops in and defeats them. He gives Thor something that means he's courting Thor - I think it's a bracelet, but wouldn't swear to that in a court of law. lol Loki has zero interest in anything going on with the Avengers or in helping them. He only did it to impress Thor.
Things go along and somehow Bucky (and someone else maybe) gets kidnapped by Hydra. Loki isn't going to bother to help at first, but Thor pretty much blackmails him into by denying his court until he does. lol They get him/them back.
Pretty sure it was complete but wouldn't swear to that either.
Anyone that can help me is my bestie 4 lyfe. Thanks y'all!