Casper Meets Wendy

The Ghostly Trio cause panic at a baseball game, and their nephew Casper fails to settle the terrified crowd. The park empties, and after watching their effect with satisfaction, Casper's uncles plan a vacation.

Meanwhile, a malevolent warlock named Desmond Spellman is told by the Oracle in the Mirror that in the future, a good little witch named Wendy will surpass him. Desmond plans to get rid of her with the advised "Mystic Abyss", a dimensional rift that can destroy living beings. He then creates a pair of spies: Jules and Vincent, and assigns them to bring Wendy to him from where she is living in the country with her three mischievous aunts: Gert, Gabby and Fanny.