Nathan, a brilliant New York lawyer who leads a life of professional success, but his private life is pretty dismal since he divorced Claire, his only love. Until he meets Doctor Kay, a mysterious doctor who introduces himself as a Messenger. He claims that he can sense when certain people are about to die, and that he is sent to help them put their life in order before it s too late. Nathan doesn t believe a word of this, but soon afterwards he witnesses some disconcerting scenes which seem to confirm the doctor s claims.