When Casper discovers that his friendliness poses a threat for his fellow ghosts, he goes back to school in order to learn how to be scary. While brushing up on his spook skills, he uncovers that the institution's headmasters are plotting to take over the world. Enlisting the help of his friends, he becomes determined to stop their evil plans. Delightful computer-generated adventure features the voices of Devon Werkheiser, Jim Belushi, Bob Saget, and Phyllis Diller.