In medieval China, three sexy serpentesses need the essence of virgin males to defeat the evil Yinsan Monster, so they go on a quest which leads them to an inn occupied by an impotent landlord and a western Christian missionary with revitalising properties.
Ultra serious Ko Lap and carefree Kung Kwan are expert assassins.It's love at first sight for Kwan when he runs into the lovely Bin Yee. And Ko Lap continues to hide his love for Sau Yu, agent for him and Kwan. Unkowingly, Ko Lap executes a contract on Yee's father.
