Beach Boy is a maverick cop whose unorthodox and incompetent ways are frowned upon by his uptight superiors. His inept partner Mr. Chow isn't much help, and is more concerned with taking care of his many, many children. On a routine stakeout, Beach Boy and Mr. Chow rescue a lovely Mainland girl named Ah Yuk, who was previously abused by her criminal uncle.
The city has been devastated by a nuclear attack. An evil deformed villain controls the city's scarce water supply, exerting influence over a popular leader and a militarist colonel.
Guo Jing and Huang Rong return to Peach Blossom Island and are shocked to see that Guo's first martial arts teachers, the "Seven Freaks of Jiangnan", have all been murdered except for Ke Zhen'e. Guo Jing is tricked into believing that Huang Rong's father, Huang Yaoshi, is responsible for the murders and he attempts to avenge his teachers by fighting Huang Yaoshi. The intelligent Huang Rong eventually uncovers the truth and reveals that the murders are actually part of a plot masterminded by Ouyang Feng and Yang Kang. Ouyang and Yang want to make Guo Jing and Huang Yaoshi kill each other and Yang can learn Ouyang's newly mastered skills from the fake copy of the Nine Yin Manual.
Shaolin warrior Tung Chien-chen is injured in battle against the hated Wu Tang clan, and nursed back to health by a knife-throwing master. As he recovers, Tung learns this deadly art, and also falls in love with his teacher's daughter. But when a Wu Tang attack disrupts the young lovers' wedding, Tung must put his new skill to use as he seeks revenge.