The Master Strikes

Chen is a bodyguard, entrusted by Yang Yee Kwan with guarding a rare treasure, and after spending nights practically sleeping on top of it to ensure its safety, he discovers it's been stolen, sending him into a spiral of madness and violence. Two conmen find out about Chen's connection to the treasure, and they join forces with him in an attempt to get rich.
(Source:
HKCM)