Moomintroll travels through the woods to get home with milk for Moominmamma. A simple trip turns into a colorful adventure as Moomintroll meets Mymble, who has lost her sister, Little My. Along the way, they endure the hijinks of all the charming characters of the Moomin world, including the Fillijonks and Hattifatteners. Will Moomintroll ever make it home safe and sound?