Ice Climber (Nintendo Cinematic Universe)

Ice Climber is a Japanese anime film.

Summary
Two Eskimo siblings, Popo and Nana, must make the dangerous journey up the mountain to save their dying father.

Plot Elements

 * An Eskimo mountain climber gets trapped on a mountain.
 * The Eskimo's children, Popo and Nana, decide to go save him after hearing this.
 * The siblings are successful in their mission.