The plot involves patriots during the Sung Dynasty and their attempts to rescue a kidnapped prince from Ching troops who have invaded the north of China. The patriots are led by Ti Lung who recruits a mysterious but seemingly superhuman fighter played by David Chiang to find a way to cross a perilous bridge to enter an impregnable fortress to locate and rescue the imprisoned prince.
You can now watch The Deadly Duo online on the following streaming providers in the United States.
| Directing | Chang Cheh | Director |
| Writing | Ni Kuang | Writer |
| Production | Run Run Shaw | Producer |
| Art | Johnson Tsao Chuang-Sheng | Art Direction |
| Camera | Kung Mu-To | Director of Photography |
| Editing | Kwok Ting-Hung | Editor |
| Costume & Make-Up | Li Chi | Costume Design |
| Sound | Frankie Chan Fan-Kei | Original Music Composer |
| Costume & Make-Up | Fong Yuen | Makeup Artist |
| Directing | Godfrey Ho | Assistant Director |
| Directing | Liu Tien-Min | Assistant Director |
| Directing | Yun-Hua Wang | Assistant Director |
| Art | Ho Chieh-Fu | Props |
| Art | Kamber Huang Chin-Ba | Title Designer |
| Art | Lai Yu | Props |
| Sound | Wang Yong-Hua | Sound Recordist |
| Lighting | Kuan Ying-Chuen | Lighting Technician |
