"Then, the gang heads to Dooville to visit Scooby’s family, and arrives just in time to attend Professor Phantasmo’s Circus Fantastique, where the calliope music is hypnotizing the crowd to join their "circus of living evil!" Finally, our crimefighters encounter Bedlam in the Big Top at a jinxed circus. Jinkies! Will they discover who’s behind the mask of the Ghost Clown?"

Features two Stone Age families, the Flintstones and their neighbors, the Rubbles.