Little Tiger ventures from the sticks to the big city in search of his cop brother Big Tiger, an honest cop working in a corrupt system. Surmising that life in the police force was not his cup of tea, Little Tiger joins the Swallow Acrobatic Troop, which he excels in because of his kung-fu prowess. When a band of thugs from Chin Hung-yun's group attacks the troop, Little Tiger not only handily fights them back but also infiltrates their organization to destroy them from the inside. Meanwhile, Big Tiger's old flame Mary returns from America to join the revolutionaries. Big Tiger soon finds himself torn between his love of this girl and his orders to arrest all revolutionaries.

Yuen Biao
as Little Tiger

Anita Mui
as Mary Sung Ka Pei

Sammo Hung Kam-Bo
as Mr. Chin Hung Yun

George Lam Tsz-Cheung
as Colonel Big Tiger

Chan Chi-Fai
as

Cheng Ka-Sang
as

Lawrence Cheng Tan-Shui
as Chen Ta-wen

John Cheung Chan-Sang
as

Tien Niu
as Ting Ting

Sandy Lam
as Pao