Pokemon Movie 03: Kesshoutou no Teiou Entei

Young Molly Hale is left desperately lonely after her father disappears while studying the mysterious Unown. When she plays with the strange letter-shaped tiles he left behind, her wish for a family awakens the Unown, which reshape Greenfield into a vast crystal world and create the legendary Entei to become the father she longs for.

When Entei takes Ash's mother to complete Molly's imagined family, the crisis becomes personal. Ash, Misty, Brock, Pikachu, and their Pokémon enter the expanding crystal fortress to bring her home, but reaching Molly means confronting a world that obeys a grieving child's wishes and an Entei determined to protect those wishes at any cost.