贫苦街童阿祥到工厂当童工谋生。老板拼命压榨阿祥等童工。唯一关心他们的是一个正直的老教师。工厂管工和他的手下整日欺压童工，营私舞弊。阿祥发现后，勇敢地揭发了他们。
Bruce Lee
Kid Cheung
Yee Chau-Sui
Uncle Ho
Lee Hoi-Chuen
Hung Pak-Ho
Fung Fung
Flash Knife Lee
Chan Wai-Yue
Lui Mei
Yuen Biu-Wan
Boaster Chiu
Ko Lo-Chuen
Secretary Ko
Tong Yuen
So-Mui
Chiang Kwai-Lam
Ah Ngau
Alice Fung So-Bor
Ah Chu
Chow Chi-Sing
Four-Eyed Joe/Tsui
Yip Ping
Hung's wife
Go Chiu
Secretary
Yip Yan-Foo
Teacher
