Typical Shaw Brothers period kung fu epic directed by veteran Chang Cheh. The dying master of the powerful Poison Clan dispatches his last pupil on a crucial mission. Worried that the skills he has taught are being used to evil ends, he orders Yan Tieh to trace a retired colleague and warn him that the fortune he amassed from caln activites is under threat from five of his former pupils. Each an expert in his own lethal combat style, The Centipede, The Snake, The Scorpion , The Lizard and The Toad comprise a truly invincible force. Yan must discover the whereabouts and true identities of these deadly warriors, and decide which he can trust. Noted author and martial arts instructor, Leung Ting was responsible for creating the individual fighting styles seen in the film, whilst the task of blending and choreographing fell to action director Robert Tai.