In the 1980s, gangs were entrenched in the Kowloon Walled City, the notorious "Three Don't Care" area, and there were dangers. Chen Luojun (Lin Feng), a young man in need, escaped by mistake, and was accidentally rescued by the "big shot" tornado (Gu Tianle), forming a sincere friendship between brothers. At the same time, the evil gang, which had been coveting the city for a long time, launched a fierce battle to seize the village, and a passionate battle to defend the village broke out immediately! This film is based on Yu 'er's original novel "Kowloon Walled City".