 Scooby and the gang attend a rock concert of their friend, Alex Super. The show turns sour when Alex and his band sing a number based on an ancient voodoo chant. This conjures up a witch doctor named Mamba Wamba, who kidnaps Lila, a member of the band. The gang hunts down Mamba Wamba at Maison Dupree, an old Southern plantation. There they meet two zombies, one of whom is Lila. It s up to the gang to solve this mystery before they become zombies themselves. . . . The Blue Falcon and his inept mechanical sidekick, Dynomutt the Dog Wonder, find their super-abilities tested by the evil Queen Hornet. With a gun that squirts quick-drying honey and a hive full of angry hornets to do her bidding, the Queen Hornet seems impossible to stop.