Charlie's brother, Sam dies in a car crash that Charlie survives. Charlie is given the gift of seeing his dead brother but when the girl he fell in love with's life is at risk he must choose between his girlfriend and his brother.

Sam St. Cloud: Nobody ever gets to see what could have been.
Sam St. Cloud: Mom's gonna kill us
Charlie St. Cloud: Don't worry I'll take the blame.
Sam St. Cloud: God I hurt so much.
[Florio's flashlight shines near their car]
Sam St. Cloud: What's that?
Charlie St. Cloud: They're looking for us.
Sam St. Cloud: Who?
Charlie St. Cloud: I don't know.
Sam St. Cloud: Please whatever happens, just don't leave me okay?
Charlie St. Cloud: I won't.
Sam St. Cloud: Charlie... Charlie!
Charlie St. Cloud: I won't.
Sam St. Cloud: Charlie! Please just don't leave me!
[Florio gets on his knees and looks through the shattered window into Charlie's face]
Charlie St. Cloud: I WON'T!
Sam St. Cloud: I'm okay Charlie. I'd give anything for you to see me. What I've become, but no one ever gets to see what could have been.
Charlie St. Cloud: Sorry I had to break our deal.
Sam St. Cloud: It was time. It's beyond anything we ever imagined Charlie.
Charlie St. Cloud: I hurt as bad as the day you died.
Sam St. Cloud: You hurt because you're alive.
Charlie St. Cloud: We'll always be brothers.
Sam St. Cloud: Promise, everyday, come rain or shine, through Hell or high water?
Charlie St. Cloud: ...I promise.
Charlie St. Cloud: We'll always be Brothers...
Sam St. Cloud: Promise, through rain or shine, hell or high water?
Charlie St. Cloud: I PROMISE!
Charlie St. Cloud: [drinks Alistair's alcoholic drink and coughs] Water...
Alistair Wooley: Never steal another man's gin.
Sam St. Cloud: Just can't wait can you?
Charlie St. Cloud: Sully and Green leave for basic training in a week.
Sam St. Cloud: No, Charlie, I mean to get out here.
Charlie St. Cloud: C'mon I'm gonna see you all the time.
[Charlie smiles and puts his arm around Sam's seat]
Sam St. Cloud: That's what dad said.
Charlie St. Cloud: Yeah, but I'm not dad.
[Charlie unwraps his arm from Sam's seat]
Charlie St. Cloud: I'm not gonna ditch you Sam. I'm not gonna ditch you.
Sam St. Cloud: Whatever.
Sam St. Cloud: I'm okay Charlie. I'd give anything for you to see me. What I've become, but no one ever gets to see what could've been"
Charlie St. Cloud: Sorry I had to break our deal.
Sam St. Cloud: It was time. It's beyond anything we ever imagine Charlie.
Charlie St. Cloud: I hurt as bad as the day you died.
Sam St. Cloud: You hurt because you're alive.
Charlie St. Cloud: ...I promise.