Scientists explore Mayan ruins, only to discover Caltiki, a growing blob-like menace! As it devours its victims flesh, Caltiki grows larger, more indestructible! What can stop this giant monster?  Also included is -Attack of the Monsters-(aka. Gamera vs. Guiron). Giant turtle monster Gamera must save 2 boys who have been abducted to a strange planet inhabited by Guiron, a giant knife headed monster!