After his parents are murdered, Jiang Xiao Yu is separated from his twin as a baby and taken by a family friend to Villains Valley, where he is raised to be a villain by a host of outlaws, each of whom has a special skill. When he's old enough, he devises clever means to trap each of his uncles and escape the valley to head off into the outside world. A chance encounter with a beautiful girl dressed as a man leads to a treasure hunt and eventually a confrontation with the Princess of Yi Hua Palace, the one who murdered Xiao's parents in the first place. Eventually, a reunion with his twin will occur.
Unfortunately the movie The Proud Twins is not yet available on HBO Max.
| Production | Run Run Shaw | Producer |
| Writing | Chor Yuen | Writer |
| Directing | Chor Yuen | Director |
| Production | Mona Fong Yat-Wah | Producer |
| Editing | Chiang Hsing-Lung | Editor |
| Writing | Gu Long | Novel |
| Writing | Gu Long | Story |
| Art | Chan King-Sam | Art Direction |
| Camera | Huang Chieh | Director of Photography |
| Sound | Tsui Ping-Kwong | Sound Recordist |
| Sound | Eddie H. Wang Chi-Ren | Original Music Composer |
| Editing | Yu Siu-fung | Editor |
