Snot and Splash travel to their grandmother's house in the small town of Mouthwash for a winter holiday. Once there, they discover that everything is a little off in what used to be a very ordinary town. The strangest thing is that holes are disappearing from the town. Snot and Splash set out to investigate and manage to get on the trail of a local dentist, Migrén Junior. However, the investigation is in danger of failing when messy Snot and diligent Splash get into an argument with each other. How can Mouthwash be restored and the holes put back in place if the boys can't work together? The only way to restore the world is for the brothers to work together.
Unfortunately the movie Snot and Splash is not yet available on Disney Plus.
| Writing | Ilja Rautsi | Screenplay |
| Costume & Make-Up | Anna Vilppunen | Costume Design |
| Production | Teemu Nikki | Executive Producer |
| Production | Johanna Karppinen | Executive Producer |
| Art | Santtu Toivola | Production Design |
| Costume & Make-Up | Maia Hirvonen | Makeup Designer |
| Production | Jani Pösö | Executive Producer |
| Production | Anita Hyppönen | Line Producer |
| Directing | Tuula Nikkola | Assistant Director |
| Production | Aino Suvanto | Production Manager |
| Sound | Zacharias Kullman | Sound Designer |
| Editing | Jussi Sandhu | Editor |
| Production | Mikko Leino | Executive Producer |
| Camera | Tuomo Hutri | Director of Photography |
| Directing | Milla Nokelainen | Second Assistant Director |
| Camera | Nea Salminen | First Assistant Camera |
| Production | Minna Sorvoja | Casting |
| Directing | Miro Seppänen | Third Assistant Director |
| Camera | Valpuri Lindberg | Second Assistant Camera |
| Camera | Nelli Nyman | Second Assistant Camera |
| Camera | Teemu Rosenqvist | Second Assistant Camera |
| Directing | Sanna Östman | Script Supervisor |
| Camera | Marko Mantere | Key Grip |
| Directing | Sara Laaksonen | Script Supervisor |
| Lighting | Aki Karppinen | Gaffer |
| Lighting | Colin Thaa | Lighting Technician |
| Editing | Timo Luomanen | Colorist |
| Sound | Sami Kiiski | Production Sound Mixer |
| Visual Effects | Hugo Kiekeben | VFX Artist |
| Sound | Pietu Korhonen | Foley Editor |
| Sound | Pietu Korhonen | Foley Supervisor |
| Crew | Raine Toikkanen | Special Effects Technician |
| Crew | Reijo Kontio | Stunt Coordinator |
| Production | Mikko Soukkala | Location Manager |
| Art | Mikko Soukkala | Location Scout |
| Art | Petri Kyttälä | Location Scout |
| Production | Petri Kyttälä | Location Manager |
| Editing | Eero Seppänen | Online Editor |
| Visual Effects | Pedro Furet | VFX Artist |
| Visual Effects | Tero Malinen | VFX Artist |
| Crew | Jouni Kivimäki | Stunt Coordinator |
| Visual Effects | Lasse Kilpiä | VFX Artist |
| Crew | Amin Kassam | Special Effects Technician |
| Visual Effects | Carlos Santos | VFX Artist |
| Production | Jani Pösö | Producer |
| Writing | Juice Leskinen | Book |
| Directing | Teemu Nikki | Director |
| Production | Ari Matikainen | Producer |
