The gang leader Dahua (Simon Yam) is arranged by Jibao (Lin Xue) to carry out a very difficult gang mission, so he reconvenes his most trusted brothers Achun (Jordan Chan), Gaotian (Pierre Ng), Char Siu (Eric Cheung), Superman (Leung Lit Wai) and his daughter (Ai-Nong Qiu) to re-enter the underworld. Unexpectedly, when carrying out the mission, they fail again and again and encounter a double encirclement and suppression by the gang and the police. The brothers have to clear the fog, catch the traitor and find out the truth...