The Moomin family and their friends are the delightful creation of Tove Jansson, and are full of a particular humour and magic that has enchanted generations of children and adults alike. In this new adventure, Moomintroll is bursting with excitement - the sun is out and he and Little My and all the Moomins are sailing to Lonely Island to look for treasure. But there is so much to do beforehand that by the time they are ready, night has fallen. Will they find treasure by the light of the moon?