Josie and the Pussycats are taking a break from their concerts by attending a Medieval festival at Sherwood Forest with Mystery, Inc. Shaggy is eager to show the band his collection of chants and secular music from the Middle Ages, not counting the fourteenth century of course. After finishing a troubadour song, there is trouble. It's the Ghost of the Sheriff of Nottingham. The Medieval festival is ruined. It is up to Mystery, Inc. and the Pussycats to solve this mystery. The manager of the festival, who is a descendent of Robin Hood, wants the ghost caught as soon as possible. But how can the mystery solvers catch the ghost.