The Ice Demon and the Spider (джен)

When Loki and Thor's recklessness gets them exiled to Midgard, Loki finds himself back in the other place he had once called home. But his arrival has attracted attention of a foreign military, something called SHIELD, and he vows to protect this kingdom from these new invaders. Meanwhile Thor finds out the truth of what happened nearly seventy years ago, as an old evil rouses and threatens the same again.