Pokémon: Pikachu's Rescue Adventure(1999)

Pokémon: Pikachu's Rescue Adventure is an animated film that follows Pikachu and its companions after they tumble through a Diglett hole into Pokémon Valley, a hidden sanctuary. When Togepi falls into the mysterious realm first, the group bands together to locate their friend. They discover Togepi nestled in an Exeggcute nest, but their relief is short-lived—one Exeggcute has gone missing. As the friends search the valley, a violent storm suddenly sweeps in, threatening to scatter the nest and separate everyone. Racing against thunder and wind, Pikachu and the group must work together to protect the Exeggcute family and find their way back home. The adventure tests their friendship and determination as they face nature's fury in this unfamiliar world.