Strange things have been happening around Normal University student Yingzi recently. First, he was followed in the underground passage, and then there was a murder in the school. He was sent to the hospital inexplicably. A series of unbelievable things made Yingzi uneasy. Horrible things happened one after another. A shadow-like "mask man" always entangled everyone involved. Is this series of events man-made or the work of evil spirits?
