He Li Wang (played by Fan Shaohuang) has been extremely strong since he was a child. Later, he was taught by his family's old friend Shan Gui (played by Tamba Tetsuro) and learned pure hard Qigong. Li Wang's girlfriend Yingying accidentally discovered a drug dealer's deal. The drug dealer caught Yingying and made her fall to her death. Li Wang killed the drug dealer to avenge his girlfriend, so he was imprisoned in Kokubun Prison. It was 2001, and the prison was privately contracted as a profit-making tool. The prisoners suffered brutal treatment and were miserable. Li Wang could not tolerate the bullying of the weak by the killer Shanmao in the North Warehouse of Kokubun Prison, so he attacked and seriously injured him, angering the North Warehouse Heavenly King Minghai. The deputy warden, Shanyan Snake, challenged the two to a duel. Li Wang killed Minghai and was involved in a series of battles with the other three Heavenly Kings Huangquan, Taishan, and Baishen in the four warehouses of Kokubun Prison. Li Wang burns the poppy field in the prison, which makes the prison director (played by Ho Ka Kui) who has just returned from vacation very angry. The director who also practices hard qigong will be Li Wang's most powerful enemy... This film is adapted from the Japanese manga of the same name.