Ah Cheng has decided to get out of this silly kung-fu business and retire with his new girlfriend. Unfortunately, everyone is out to kill him, and one of the killers has been using his trademark knives to frame him! Meanwhile his friends meet up with a mysterious swordsmen who is not what he seems.
You can now watch Deadly Duo online on the following streaming providers in the United States.
| Writing | Sung Pe Liu | Writer |
| Writing | Yen-liang Tung | Writer |
| Directing | Yang Ching-Chen | Director |