Commissioner Liu Ta-hua (Tsao Ta-hua) is arrested by special envoy Cheng Chih-cheng (Wang Jung) for corruption. Coolie Lin Szu-hai (Gordon Liu Chia-hui), who has unintentionally helped Cheng, is given a small post under Lo. Lin is smart and soon learns how to get dockside bribes. Later, he gets a regular spin-off from Adjutant Chang…