1: The Beginning

After Eileen vanished, the four boys split into two groups. Cas and Dean go to fight Billie while Sam and Jack find other survivors. But on the second groups way, they find a familiar refugee, but also an unusual situation.

Spoilers to Supernatural 15x18. This is from a dream I had with a different ending to the episode and season. I was writing this from 6am this morning(When I got the idea) till like 1pm in the afternoon. So please appreciate it XD.