Casper Meets Wendy (movie, 1998)

When a warlock threatens Wendy the Good Little Witch, she and her aunts hide out at a resort where Casper the Ghost is vacationing with his uncles. Although Casper and Wendy are told ghosts and witches don't get along, the two are kindred spirits! This spooky family-friendly adventure finds Casper and Wendy bridging the ghost-witch divide to battle the warlock who is intent on destroying Wendy.