The Winchesters get a call about Bobby and find him trapped in a dream. Dean and Sam need to save him and disable the one who trapped him.
Sam: But, really, the thing is no one can save you.
Dean: That's what I've been telling you.
Sam: No, that's not what I mean. No one can save you because you don't want to be saved. How can you care so little for yourself? What's wrong with you?
Dean: I take it we believe in the legends?
Sam: When don't we?
Dean: Crap.
Sam: What?
Dean: Bella.
Sam: Bella? Crap.
Dean: Dude, you were out and making some serious happy noises. What were you dreaming about?
Dean: Oh, you're not going anywhere. I don't trust you enough to let you in my car much less Bobby's head.
Dean: Great. Well, I'm just going to go blow my brains out now.
Dean: I get it. I get it. I'm my own worst nightmare, that it? Huh? Kinda like the Superman 3 junkyard scene, a little mano e mano with myself.
Dream Dean: You're as mindless and obedient as an attack dog.
Dream Dean: What are the things you want? What are the things you dream? I mean, your car? That's Dad's. Your favorite leather jacket? Dad's. Your music? Dad's. Do you even have an original thought? No, all there is is watch out for Sammy. Look after your little brother, boy. You can still hear your dad's voice in your head, can't you? Clear as a bell.
Dean: Just shut up.
Dream Dean: I mean, think about it. All he ever did was train you, boss you around, and Sam? Sam, he doted on. Sam, he loved.
Dean: I mean it. I'm getting angry.
Dream Dean: Dad knew you who you were, a good soldier and nothing else. Daddy's blunt little instrument. Your own father didn't care whether you lived or died. Why should you?
Dean: My father was an obsessed bastard. All that crap he dumped on me about protecting Sam? That was his crap. He's the one who couldn't protect his family. He's the one who let Mom die. He's the one who wasn't there for Sam. I always was. It wasn't fair. I didn't deserve it, what he put on me, and I don't deserve to go to hell.
Dean: Pack your crap.
Sam: Why? Where are we going?
Dean: We're going to go hunt that bitch down.
Dean: Sam, I've been doing some thinking and, the thing is, I don't want to do. I don't want to go to hell.
Sam: All right, yeah. We'll find a way to save you.
Dean: Ok. Good.
Dream Dean (flashback): You can't escape me, Dean. You're going to die and this is what you'll become.