The Moomintroll is on his way home to his mother but runs into trouble. Little My has disappeared, and Hemulen, who thinks it's Christmas, sucks up everything that comes his way in the vacuum cleaner's big horrible funnel.
Unfortunately the movie The Book about Moomin, Mymble and Little My is not yet available on Disney Plus.
| Writing | Tove Jansson | Book |
| Editing | Daniel Cascales Granados | Editor |
| Writing | Tove Jansson | Original Story |
| Visual Effects | Aline Bertrusso | Animation |
| Visual Effects | Rafael Peclat | Animation |
| Visual Effects | Ellie Petrova | Animation |
| Art | Mónica Marqués | Storyboard Artist |
| Sound | Lauri Porra | Original Music Composer |
| Sound | Mika Niinimaa | Sound |
| Sound | Miikka Huttunen | Sound Mixer |
| Visual Effects | Mónica Marqués | Animation |
| Sound | Miikka Huttunen | Recording Supervision |
| Sound | Kai Poutanen | Recording Supervision |
| Sound | Kasmir Uusitupa | Musician |
| Sound | Hanna Hohti | Musician |
| Sound | Markus Hohti | Musician |
| Sound | Silja-Mari Heikinheimo | Musician |
| Sound | Eriikka Maalismaa | Musician |
| Sound | Maarit Holkko | Musician |
| Sound | Liina-Mari Raivola | Musician |
| Sound | Antti Kujanpää | Musician |
| Sound | Oskar Hänninen | Musician |
| Sound | Clara Manaud | Musician |
| Sound | Lauri Porra | Musician |
| Directing | Veronica Lassenius | Director |
| Production | Pablo Jordi | Producer |
