Shaolin monk Huo Xin (Yuen Biao) was originally a brave detective in Hong Kong. Because his young wife left him with their daughter, and he accidentally killed a young man while investigating a case, he couldn't see it and came to Shaolin Temple to become a monk. Now, Huo Xin and a group of fellow apprentices have returned to Hong Kong for a tour performance. Coincidentally, a series of unexpected murders happened at this time. One after another, people suddenly got hot all over, self-mutilated like crazy, and finally died tragically. Even Huo Xin's former boss and good comrade Li Sir died inexplicably. In order to find out the truth and help Li Sir redress his injustice, Huo Xin decided to stay and find out the truth. Huo Xin and a tenant (Moses Chan) of his old friend Huang Bao (Bryan Leung) lived in Huang Bao's rental house. Huo Xin discovered that this tenant was a male prostitute, but his psychic feeling told him that this person would experience a series of thrilling scenes with him in the future, and the case became more and more confusing. Huo Xin once again became a detective!