Catherine Hun

A martial arts instructor working at a police academy gets imprisoned after killing a man by accident. But when a vicious killer starts targeting martial arts masters, the instructor offers to help the police in return for his freedom.

Sing's last two films were flops, but he is given the helm on a Category III sex film and has to cope with a leading lady who won't do nude scenes, Triad backers, and a crumbling relationship with his girlfriend.