While attending the Grind Games, the gang runs into the ghost of an Alcatraz prisoner, who is targeting members of the competition.

While traveling to the Montreal Rock Festival, Scooby and company rescue the band Simple Plan from an invisible madman.

After Shaggy wins a trip to the Sccoby Snack Factory, the gang prepare for a well deserved holiday. Unfortunately, the ghost of a former employee is lurking in the shadows!