A Taoist temple is popular among the neighbors. The host is not only a Taoist master, but also a philosophical wise man - Peng Baichuan (played by Zheng Shaoqiu). By chance, he met three young men, Zhang Hanzhong (played by Mai Zile), Xu Boqiang (played by Chen Anli), and Sima Zhiquan (played by You Xuexiu), and accepted them as apprentices. The four masters and apprentices solved the ghost problems of the neighborhood and gradually became famous. One day, the 7th Action Team invited Master Peng to help. With Taoist wisdom and magic, the four solved cases one after another and were gradually recognized as consultants of the 7th Action Team, becoming the first generation of "ghost detectives"! The story is set in Hong Kong in the 1980s, and it also involves traditional Chinese folk superstitions, such as Yu Lan Shenghui, ghost marriage, and the Five Hells of Immortality. The subject matter is full of mystery.