Pokemon Movie 3: Spell of the Unown

Synopsis:

Molly is a young girl who is fascinated by her archaeologist father's stories of legendary pokemon - especially the regal Entei. But when her father vanishes, Molly is left alone; and her grief causes her to accidentally summon the mysterious Unown, who subsequently transform the castle and surrounding land into a crystalline wasteland. Once Ash's mother is kidnapped by Entei to be a surrogate mother to Molly, he and the gang must make their way to the castle to save both her and Molly alike from the grip of the Unown...