I think it's canon AU after the 1st Thor movie, Loki fell to earth and everyone thought he's dead. Then he proceeds to make amends by helping Jane Foster with her research so that they can be used for repairing the Bifrost bridge. It's kinda redemption!Loki, and there are a lot of details on how he began to become friends with Jane and Darcy and others. In the end they succeeded and open the Bifrost and Thor came, then of course Thor recognized Loki and happy end.
BTW just watched Thor 2 tonight. OMG LOKI HOW CAN YOU BE MORE AWESOME I LOVE YOU SO MUCH. Everyone watches Thor 2 will fall in love with Loki I AM SO NOT KIDDING. NO ONE CAN NOT LOVE HIM.