Summary:

Stiles had never known more to his life than the pack. Thus, when the pack decided he's too much of a collateral damage, he runs. While running from his past, he stumbled his way into S.H.I.E.L.D and somehow managed to squirm his way into the hearts of The Avengers, especially a certain Captain's.

When he had finally amount to a life worth living, the world just had to crash and burn. He and The Avengers are humanity's last hope--a heavy burden to bear with hard decisions to make, all while dealing with his old pack. Sometimes, you just can't save everyone; Stiles learned that the hard way.