This quartet of action films starring Hong Kong's Donnie Yen kicks off with Hero Among Heroes, in which a young noble (Yen) comes of age amid a backdrop of the opium epidemic in China. In Cheetah on Fire, the authorities pursue a weapons dealer with a computer chip. Cop Yen helps a group of treasure-hunting teens in Dark City. And a teacher (Yen) must rescue his kidnapped students in Holy Virgin vs. Evil Dead.