The basic premise for the series, akin to the much later live-action sci-fi series "Sliders", was the story of a band of adventurous, cuddly, dog-like creatures called Fluppies who use a crystal key to open inter-dimensional doorways. They are on a mountain of one world in perilous weather, and use the crystal key to escape, ending up in a jungle world the Fluppies are chased by a big purple dinosaur-like creature, they find another portal and escape into a supermarket on Earth.