Moomintroll, Sniff and Little My set out to stop a comet approaching the Moominvalley. Along the way they meet Snufkin, the beautiful Snorkmaiden, Snork and Hemulen, who join them in their quest.
| Directing | Hiroshi Saitō | Director |
| Writing | Akira Miyazaki | Writer |
| Sound | Sumio Shiratori | Music |
| Production | Kazuo Tabata | Producer |
| Editing | Seiji Morita | Editor |
| Camera | Hisao Shirai | Director of Photography |
| Writing | Tove Jansson | Novel |
