Mosquito (played by Mark Chao) moved to Monga when he was 17 years old. He entered the underworld because of a chicken leg and met four good brothers, Monk (played by Ethan Ruan), Zhilong, Abo and White Monkey. The five of them formed the Prince Gang. The Prince Gang upholds the spirit of only knowing the spirit and not asking the meaning. With the underworld status of Zhilong's father Geta (played by Ma Rulong), they can call the wind and rain in the school. Stepping into the underworld means going through the bloody storm, but the monk, as the patron saint of everyone, can always help them resolve the crisis. The traditional underworld order of Monga is threatened by modern civilization. The outsider Gray Wolf (played by Niu Chengze) asked to cooperate with the bosses of Monga but was rejected. At this time, the monk was dissatisfied with Geta because he learned about the things between his fathers, and was involved in a conspiracy due to Wen Qian's instigation. The situation in Monga was turbulent and murderous. The five brothers performed a tragic story about youth in the choice between the underworld and friendship. Director Niu Chengze called "艋舺" a "vigorous and gorgeous youth action film". The film was released in Taiwan during the 2010 Spring Festival, and the first week box office reached NT$60 million, breaking the first week box office record for Taiwanese local films.