Moomintroll encounters a mouth-organist, a moth collector, and a lovely maiden, and discovers the danger of a threatening comet when he takes a journey to seek advice from the Professor.

Tove Jansson takes us on a beautifully illustrated and delightfully quirky journey through Moominvalley, perfectly capturing the experience and its emotional impact as seen through the innocent eyes of Susanna, who is bored with her life: Her cat is too content; her surroundings, too gentle. She craves adventure when there is none to be had. But when a new pair of glasses appears in front of her, she gets an opportunity to live the bold life that...

Moomin wakes up one morning to find the pond frozen over, and rather than hibernate, the family decides to brave the winter weather. At first, their wintry adventure seems to be going swimmingly, until Mr. Brisk of the Great Outdoors Club takes over and forces everyone to embrace the winter sports, whether they want to or not.