Pokémon: The Mastermind of Mirage Pokémon

Ash, Misty, and Professor Oak are invited to the mansion of Dr. Yung, a Pokémon scientist who has developed a machine to create Pokémon. However, he is kidnapped by a mysterious stranger who wishes to use the system to produce Pokémon with absolutely no weaknesses, and is enraged by the sudden presence of Mew.