Episodes: 1Status: Completed
Alternate Titles: A Comet in Moominvalley, Comet in Moominland, Muumin Movie,ムーミン谷の彗星
Unusual things have been happening in Moominvalley. Moomin, Sniff and Mee leave for the Observatory on the Lonely Mountains to confirm the Muskrat's words: a comet is about to hit Moominvalley and destroy everything. On the way they meet Snufkin, the Hemulen and the Snorks and experience many adventures.