a reasonably famous piece of hong kong cinema released in 1978, when the martial arts craze was still going relatively strong. the domestic popularity of the film was such that the central cast was propelled to significant local fame
the plot runs as such: the aged master of the poison clan once had five students, each trained to fight like a different kind of venomous animal: the quick-handed centipede, the flexible snake, the stingy scorpion, the really-good-at-climbing-walls lizard, and the, um, *indestructible* toad. however, this aged master is now on death's doorstoop, and he is haunted by a dream that one or more of these students have used his teachings for evil. he calls on his newest, youngest, sixth student to go to the nearby village and investigate to see which, if any, of the five are guilty, which is complicated by the fact that all the students wore masks and their identities are secret.
in case you're curious (but not curious enough to actually watch the movie): scorpion is evil, centipede is a willing accomplice, snake is an unwilling accomplice, toad is murdered and lizard is a hero who teams up with the main character.