Muumindani no Suisei
English title: Comet in Moominland
Japanese title: ムーミン谷の彗星
Type: Movie
Episodes: 1
Source: Book
Genres: Adventure, Fantasy, Slice of Life
Studios: Visual 80
Producers: Telescreen
Duration: 1 hr 12 min
Rating: G - All Ages

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.

(Source: ANN)