The Qiyifang Circus is on a tour in Malaysia, and its members accidentally heard about the treasures left by the Japanese during World War II. Under the leadership of the flying knife expert Zhang Dachu, a group of five people killed the treasure seekerSunny, a small figure who aspires to become an expert in flying knives, followed and witnessed the entire process of the atrocities committed by Da Chu and his group. He was forced to follow everyone down the cave, but had no intention of activating the biochemical weapons left by the Japanese army. After some hard thinkingDespite the arduous hardships of the elephant, Sunny managed to escape but turned into a strange appearance. At the same time, there have been several robberies in Hong Kong. The perpetrators were barehanded and cruel in their methods, and they were infected with poisonous gasMutant Zhang Dachu and others. This series of events shocked the whole of Hong Kong, and the police invited experts Sun Hao and Cheng Xiuhua from the mainland to assist in the investigation. And Sunny also transformed into a righteous messenger fighting against evil