One winter in the Far North the sun disappears and Lucia, accompanied by her milk-white cat, braves the freezing cold and trolls who want to eat her, trying to find the sun and bring it back.

A lost, lonely, and scrawny cat, hungry and afraid, unexpectedly meets someone who takes him in and loves him.

Mouse tries to cook, pretends to be Super Mouse, has a picnic with Dog, and plays tag with Cat.