Hsiao Hu has been secretly training in martial arts, as his father (Tien Feng) has forbidden him. Later, some local store owners ask Ah to help protect them from a greedy Chinese extortion ring. Ah discovers that the crime lord behind the extortion had killed his father years before and is determined for revenge.
| Actor | Role |
|---|---|
 Jackie ChanHsiao Hu | Hsiao Hu |
 Chen Hung-LiehChow Bin | Chow Bin |
 Shu Pei-PeiHsiao Lam | Hsiao Lam |
 Tien FengLung's Foster Father | Lung's Foster Father |
 Hon Kwok-ChoiLittle Frog | Little Frog |
 Ma Chien-TangChow's thug | Chow's thug |
 Kwan ChungLai Shan, 3rd Brother | Lai Shan, 3rd Brother |
 Tai SanHsiao Lee, 3rd Brother's Thug | Hsiao Lee, 3rd Brother's Thug |
| HHui Gam3rd Brother's Thug | 3rd Brother's Thug |
 Sze-Ma Wah-LungFoster Father's Friend | Foster Father's Friend |
 Gam LauFoster Father's Friend's Wife | Foster Father's Friend's Wife |
 Yi FungDock Foreman | Dock Foreman |
 Chin ChunUncle Xia | Uncle Xia |
 Wong MeiHsiao Hu's Father | Hsiao Hu's Father |
 Yeung WahChow's Thug | Chow's Thug |
 Hoh Gong-LunChow's Thug | Chow's Thug |
| HHo Lai-Nam3rd Brother's Thug | 3rd Brother's Thug |
 Yuen BiaoChow's Thug | Chow's Thug |
 Chin Yuet-SangChow's Thug | Chow's Thug |
 MarsChow's Thug | Chow's Thug |
 Yeung Sai-GwanChow's Thug | Chow's Thug |
 Yuen Yat-ChohNot listed | Not listed |