dean has started feeling alone and like a outcast with Sammy ignoring him and not dealing with his shenanigans and his mistakes and trying to control him with the Cain,Dean soon noticed casteil had a lot of alone time and he wants to know what casteil thinks about Dean and in what way.
nolan joined a group of hunters Dean Sam and casteil they go through rough times like love Crowley and hunting they try and find a way to fix Nolan's problem which turned to a bigger one but they don't give up.