Based on Disney's "The Haunted Mansion". When the gang is tired of Bunzo Bunny's and PJ Pugapillar's constant fighting for no reason; they look for a way to get them to get along. When Poppy Playtime finds out that their owner Allison West has brought out a haunted mansion dollhouse and arranged everything for Halloween, she comes up with a plan to send only Bunzo and PJ there. Among their arrival; the two rivals are put through many scary obstacles, and they are actually the 999 happy haunts living in this mansion.