Casper is a friendly ghost—the friendliest ghost you know! Unfortunately, he lives with his three Hauntaholic uncles: Uncle Stretch, who believes he's smarter than anyone who ever died; Stinkie, who can take down any fleshie with one belch-blast; and Fatso, who's big, round, and not too bright. Trying to cure these brothers is Dr. James Harvey and his spunky, worldly daughter Kat. Put them all under one roof, and you have a house full of fun.