Harvey (Bill Pullman) move into the haunted house where Casper (Malachi Pearson) and the Ghostly Trio (Brad Garrett, Joe Alaskey, and Joe Nipote) hang out. Throughout the film, Kat becomes friends ...

James Harvey (Bill Pullman) to exorcise the ghosts from the mansion. James and his daughter, Kat, move in, and soon Kat meets Casper, the ghost of a young boy who's "the friendliest ghost you know".