Worried that the skills he has taught are being used for evil, a dying kung fu master dispatches his last pupil, Yang Tieh (Sheng Chiang), on a crucial mission to track down a retired colleague and warn him that his fortune is under threat from five former pupils. Each of the graduates is an expert in his own brand of lethal combat, and Yang Tieh must uncover who among the five masked warriors -- if any -- can be trusted.