Wembley, the smallest Fraggle, wishes he were bigger. But a magical stone causes him to grow so big that he must move out of Fraggle Rock and into the land of the Gorgs where Junior Gorg mistakens Wembley for a cousin Gorg. Meanwhile, Sprocket tries to use Doc's plant light to make himself grow after being insulted for his size by Ned Shimmelfinney who called him a mutt.