Gu Feng (played by Wu Mengda) and Duan Hai (played by Liu Jiang) are both disciples of the Cangqiong School. Because they stole the secret book of Ji Le Shengong, Gu Feng saved Duan Hai, but he was expelled from the school. In order to repay Gu Feng, Duan Hai adopted his son Gu Yulou (played by Wu Zhenyu) and taught him carefully. Duan Hai treated Gu Yulou better than his biological son Duan Fei (played by Stephen Chow). In a blink of an eye, a few years have passed, and Gu Yulou and Duan Fei have grown into strong young men, but their personalities are completely opposite. Gu Yulou has an unruly personality, is arrogant, and is self-centered. In order to achieve his goals, he will do anything to achieve his goals. In order to dominate the martial arts world, he practices evil martial arts, and eventually falls into a state of being possessed by demons. Although Duan Fei is indifferent to fame and fortune and just wants to live a stable life, he has been repeatedly involved in disputes in the rivers and lakes. His father died at the hands of Gu Yulou. Duan Fei is determined to avenge his father.