In the early years of the Republic of China, Qin Yu, a professor of the Department of Archeology at Yannan University, got clues to the Tomb of Dragon by chance, and immediately began to prepare for the formation of an archaeological team. Han Yang, the heir of Mohist mechanism was also invited. In order to raise money for his second uncle's treatment, Han Yang agreed to go despite his second uncle's dissuasion. Li Daxun, a local warlord who was acquainted with Qin Yu, learned of this and offered to fund the archaeology. Qin Yu took Han Yang, his daughter Qin Qing, his students Yang Mo, Luo Ziqin and Li Daxun's daughter Li Bingyao with him. Unexpectedly, due to a rumor that there was a most precious dragon ball in the tomb, Qin Yu and his team were followed by two other tomb-robbing gangs. After difficult trekking, they got close to the destination, but found a large number of snake sloughs......