- Country: Soviet Union
- Genres: Animation, Short
- Release: 1980-08-09
- Director: Anatoliy Alyashev
- Writers: Tove Jansson , Anatoliy Alyashev
- Language: Russian
- Stars: Nikolay Litvinov , Nikolay Litvinov , Irina Pototskaya , Anatoliy Shchukin , Anatoliy Shchukin , Anatoliy Shchukin , Zinaida Naryshkina , Rogvold Sukhoverko , Rogvold Sukhoverko , Rogvold Sukhoverko , Galina Ivanova , Galina Ivanova , Natalya Litvinova , Natalya Litvinova
- Runtime: 16 min
- Awards: N/A
- AKA: Муми-дол: Всё дело в шляпе , Vsyo delo v shlyape , Муми-дол: Всё дело в шляпе (Russian Federation) , Уся справа в капелюсі (Ukraine) , It's in the Bag
- Plot: Spring. All the inhabitants of Mumi-doll do wake up after hibernation. Everyone began to do their own thing - Mumi-mama began sweeping the yard, Mumi-troll girlfriend Snork began to do her hair, Mumi-troll and Snusmumrik began to sing a song, sitting on the bridge across the river, and Mumi-papa, smoking his pipe, began to read the morning newspaper. And so Mumi-troll and Snusmumrik saw that a cylinder swam under the bridge. They raised it and brought him home. There it was tried on by Mumi-papa. But the hat was not simple, but magic.
- IMDB:tt3864716
Vse delo v shlyape Cast · · · ALL
Anatoliy Alyashev
Director
Galina Ivanova
Fröken Snork (voice)
Zinaida Naryshkina
Cuckoo (voice)
Irina Pototskaya
Moomin troll (voice)
Nikolay Litvinov
Moomin dad (voice)