I read this ages ago, but now i cant find it. Dean killed Lucifer in 2014. He takes Sam's body back to Kansas to be buried. Castiel at some point meets a girl who tells him that God still loves him or something when he is going into a hotel to go get high. Later she takes him to a church? and he detoxes. Dean and Cas meet up at some point and travel to the ocean where they stay at Robert Downy Jr's place and the supernatural books are going to be made into films. Oh, and at the beginning, Cas says he can feel when Lucifer dies because that last tiny bit of Grace he had, left when Lucifer dies. And some demons at some point take Sam's body to try to resurrect Lucifer.