The subway train falls through the ground. The surviving passengers find themselves in the territory of a secret dungeon built by the Japanese during the war for scientific experiments. Dungeons where creepy insects, grown by mad scientists, still live to this day

The tomb robber heir Sheng who has a hereditary disease, two years after his father mysteriously left home, accidentally found the family's hidden gold pieces. According to the above clues, he arrives in Jincheng where met new friends Bai Chuncheng and Bai Liu. The three embarked on a journey together to find the legendary treasure of the White Fox Emperor. During this time, they encountered another tribe of robbers who are eyeing the same tomb, causing a lot of troubles to Sheng and his company. They come together to decipher the many traps set, and put up a battle of wits and bravery. After a duel, they decide to work together to combined forces to defeat the evil forces.

In order to benefit the people, the wealthy Shen Fu of the Ming Dynasty paid for the construction of the city wall. Unexpectedly, during the construction process, the river demon rampantly destroyed the city wall under construction, and the people were panicked for a while. To appease the people, the emperor ordered Shen Fu to offer the heirloom pot of treasures to suppress the evil spirits, and was given a three-day deadline to order Shen Fu and Li Han Yang, the left minister of the Ministry of Works, to repair the city wall. The river demon is still going around, and Shen Fu investigates with his companions to discover that there is something else going on. What is the secret behind it? While fighting the monster, how can Shen Fu solve the case within the three-day deadline?