Dave the Barbarian (2004)

Season 1: Episode 30

Candy discovers that she is the only person in Udrogoth who does not have a ghost haunting her house. Caring for their sister, Dave and Fang go down to the local ghost shop, and hire a ghost. The ghost throws a huge ghost party, and everyone's ghost attends. After Candy tries to kick them all out, the ghosts get angry, and chase the gang around Udrogoth.