Zhang Yan was originally a student in the Department of Architecture, but he was not interested in his studies. He liked to do some frivolous things. A map passed down from his ancestors aroused Zhang Yan's interest. He thought it was a tomb, which could possibly reveal the secrets of his family's ancestors. However, the drawing was quite obscure. He thought about it for many years without understanding it. He gave it up and wanted to go sightseeing. Unfortunately, he was plotted and invaded, and then he was forced into a tomb robbery. During the activity, he met the sissy and the black boy, and followed them to learn some esoteric knowledge. In addition, he had read books about Dragon Hunting and Kanyu. He planned to take this opportunity to solve the mystery of the map. Moreover, he also had an important task, which was to kill the man. This accidental experience forced him to go to the road of no return, and the development of things led to a situation that he could not predict...