Its a story about a kid and who can see dead people walking around like ordinary people a psychaterist (well played by Willis) who wants to change the feelings of the kid.
Willis has his other personal problems in his house, like not talking to his wife and all that. Both, the kid and Willis share their problems and try to improve each other. Willis doesnt believe the kid untill he comes to know that he himself was killed long time ago.
The story is indeed good, but it is more cleverly handled and directed by Manoj. I am waiting for his next movie the Unbreakable again starring Bruce Willis. Its is a must watch movie.