When young Oliver Smith inherits his family's mansion, Helton Hall, his greedy cousins, the Snodde-Brittles are less than thrilled. The Snodde-Brittles have a plan though --- they'll hire ghosts from the Dial-a-Ghost agency and scare Oliver to death. Then the mansion will be theirs. But no ghostly plan is ever that easy, right? In fact, the Dial-a-Ghost ghosts take a liking to Oliver. Will the Snodde-Brittles give up?