He was invited by Master Chi, a rich merchant, to attend the wedding between his tuberculosis-ridden son and Chin Lin (Sharla Cheung Man), a beautiful young woman.
Shang Wai (Collin Chou), the spoiled son of Navy Commander Shang Kwan (Ku Feng) and uncle-in-law to Chin Lin (now "Chi Siu Ling" by marriage), has an affair with his cousin and Siu Ling's mother-in-law, Yiu Yuen Kwan (Wong Fung-King).
Three months later, when on a visit to the Chi family, Shang secretly drugged Siu Ling and raped her when she was praying to the Buddha.
The wealth of the Shang family allows them to recruit the famed lawyer "Mirror" Fong Tong Kan, one of the Four Legendary Advocates of Canton, equally famous for his skill and his lack of scruples.
During their journey, they encounter all sorts of wacky characters, including Stone Mansion a circus performer and Yu Yin a classy prostitute.
In the end, the real perpetrator of the mass murder is cut in half with a guillotine and the corrupt officials are brought to justice including lawyer Fong.