After the end of the movie. Thor has handed Loki over for punishment but rescues him when he realises what form that punishment takes. With nowhere else to go he takes him to Earth and the other Avengers. There is eventual Tony/Loki with lots of H/C. Thor is protective big brother. My explanation on why Loki is such a bad guy and how that changes.Warnings: boy/boy, violence, lemon.

Iron Man fails to destroy the missile that is heading straight to Manhattan, no one else can stop it. No one except the the villain himself, Loki. Seeing his chance to be on the winning side, Loki saves NYC from the destruction of the nuke. Months have past and the villain seems to be dead, until he brings a warning from an enemy sought to destroy Earth.