In an area previously inhabited by Drugosaurs, a paleontologist, his assistant, and four children uncover a bone belonging to one of the creatures, providing the two fossil hunters reason to explain how abusing drugs caused Drugosaurs to become extinct. The Great Drugosaur Expedition may well be the most entertaining introduction to the hazards of drug abuse ever devised, with its mock dinosaur theme underscoring a very serious message -- drug abuse a good way to become extinct!