Intelligent dog-like creatures arrive on our planet via an interdimensional portal and are captured by animal control Two children, Claire and Jamie find them at the pound and they become friends. The key allows them to enter new worlds. The world they are desperately looking for is their home. Their search gets more intensive as they discover that the key is slowly losing its powers each time they try another door. Mr. Wagstaff, a hunter of exotic animals, complicates things by his desire to capture and own the Fluppies. The series had a pilot that aired as a TV special.