The story focuses on Wu Xie who was born in a family of tomb explorers trying to find the secrets of a mysterious event decades ago with his friends.
A Landslide forces a train to stop on a bridge. Druring the stop a murder takes place. The train policeman He has to investigate the case. Only a few passengers are on board, is one of them the murderer or was a mysterious entity the killer?
Train policeman He continues his investigation of the murder which happened on the train, he looks closer into the past of the passengers and reveals new secrets .
