While seeking shelter in a haunted mansion in the graveyard from the rain, the kids are in for the scare of their lives when they find all kinds of paranormal activities going on within the mansion. But soon enough, they see and believe that King Dedede must be behind the mansion's paranoia. They decide to pull pranks on him and Escargoon that scare them all over the mansion. Eventually however, the dastardly duo learns from Customer Service that the mansion was just a trap to lure Kirby into. When that fails, the salesman decides to send over a certain bone-tossing monster to do the job for him...