Supernatural The Fight [S5 Alternative] Part One

Supernatural the alternative season 5
-whilst brothers Dean and Sam are struggling with constant events leading up to lucifer and the apocalypes, they decide to to take different paths. Sam taking the road with Mara, taking her blood for powers but there are unknown consiquences ahead. Dean sticking by the side of the angel, Castiel and both later joined by Amaia, sister of the devil. Other charaters help or even try to destroy thier victory. But will the brothers succeed with out each other?