spoiler:
iron man defeats the villian
Is it a spoiler if I make a prediction that may be right on the nose?
Anyway, there are several scenes where he looks to be in despair and one of the lines he says in the trailer is that he has to protect the one thing he can't live without. Hint, he's not talking about the arc reactor. :\
It looks like heduring the movie.gets his heart transplant
It was hard to tell from the trailer if there would be any action but I'll see it anyway.