A movie company has rolled into Michael and Norman's hometown, and the boys learn that superstar Arnold Snickersnacker will be playing the swamp monster. But the filmakers need some unusual plants to make Carter Swamp look creepier -- and what could be more perfect than sock-eating plants Stanley and Fluffy?

Michael and Norman's pet plants get right into their parts n the filming of The Revenge of the Swamp Monster. Meanwhile, Norman and his friend Bob decide to make their own monster movie on video. There's mass-confusion when Michael, Norman, their parents, and the plants have to rescue Margo, the neighbor's dog, who may get herself a walk -- on role-by accident. But the real excitement comes wen Michael and Norman learn there's a chance they may meet the great Arnold Snickersnacker himself -- and all because of their plants!