Nineteen thirties, occupied in a city. Young Dan Zhongxiang (Qi Dao decoration) electrician for the care of seriously ill in bed mother (Wang Liyuan ornaments), can only stay in the Japanese occupied areas, however the Japanese held the celebration meeting on the campaign, Dan Zhongxiang was surprised to find her sister was murdered. For revenge, Dan Zhongxiang killed the traitor betrayed Gong Xishun sister, and left a "dragon heroes" of the name. The Japanese military police commander laichuan great anger, ordered the original in political strands of the Japanese police Matsumoto Ichiro (Ma Wei decoration) stationed supervision at the police station criminal shares, a deadline. Sheriff Liu Huayong (Li Hongtao ornaments) to assist the Matsumoto Ichiro arrest. To suppress the occupied area people's Anti Japanese sentiment, the police department will Songjiang primary school principals Hao Longbin confess to false charges under torture as the perpetrators executed, Hao Longbin's sister Hao Meihua (Li Xinling decoration) was sold to Dan Zhongxiang's wedding......