The further adventures of Wang Wuji, Liu Xian'er, and Drunken Babe, after the defeat of Lian Bixie and Little Sword Immortal in the previous series. New threats arise in the form of two rivaling evil sect leaders, the Sun Emperor and the Moon Empress.

Wang Wuji, Liu Xian'er and Drunken Babe accidentally got involved in the struggles between them. Xian'er was even killed by the Moon Queen. Wuji cooperated with the Sun Emperor for revenge, but was betrayed by him. Later, the Sun Emperor and Moon Empress settled their differences. The two mastered supreme kung-fu and wanted to dominate the world. Wuji and the others decided to fight to prevent the catastrophe in the martial arts world.