Maybe this group of teens keep almost dying in their dreams, like I said before, and they figure if they kill something in their dreams it will go away. Then something happens and they find out someone is actually making their dreams deadly and they make it their quest to go kill him?
That sounds good. xD Who is this someone? Is it going to be like one of those scenarios where the killer is hiding among them or is there a definite person to go after? O: