LI SIU MAN has migrated overseas since her early childhood. She comes to Hong Kong with her friend MAGGIE to collect information of supernatural phenomenon. She is going to write a thesis on this topic. They rent a house in the remote countryside.

When they arrive, a case of murder has just occurred. A young girl is killed in the forest. Many of the villagers blame ghosts for this case but they do not believe.

Later MAN gets familiar with their neighbour CHEUNG KA WAI (Lo Ka Leung>. He is quite a silent man but they become good friends.

One day MAGGIE is being killed after meeting an intimate boyfriend in the house. MAN firmly believes that she is murdered instead of being cursed. She decides to stay and carries out investigation.

MAN is attacked by a mysterious girl in red one day and she is saved by WAI. It is found that the girl is the idiot TANG.… ...