The peaceful life of Moominvalley is disrupted when Moomintroll and his friends learn that a comet is on a collision course with Earth. Determined to save their beloved valley, Moomintroll, Sniff, and other friends embark on a thrilling journey to the Lonely Mountains to consult the wise astronomer. Along the way, they face various challenges and make new friends, discovering bravery and resilience they never knew they had. Tove Jansson's enchanting illustrations and captivating storytelling make this adventure a timeless classic, celebrating friendship, courage, and the wonders of the natural world. Perfect for young readers and Moomin fans of all ages.