Magic and Mates

Derek is a Wolf and get's his paw stuck in a bear trap, Stiles saves him.
Stiles talks a lot to Wolf-Derek and tells him that he believes in the supernatural but wishes that he had actual proof.
Derek will give him proof...eventually. First, he has to watch over the human that saves him, or at least...the person that thinks he's human. Stiles isn't human, but he doesn't know that.

Stiles thinks he's useless until he actually saves Derek, changing Derek's life and his for the better.
However, he cannot say the same thing about Beacon Hills, ever since he's saved Derek things started getting a little.....

Weird.