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". But not so friendly are Casper's uncles Stretch, Fatso ...

Casper, the ghost, begins taking some very strange lessons at a new school on how to be really mean. With all the lessons and the hands-on experiments, can Casper turn his 'boo!' into something really ...