What are they really roaring and why, those gloomy long-haired heavy musicians all dressed in black? Heavy metal is really dear to many Finns, although they don't always want to be clear about their words. When the uninitiated begin to study the lyrics and get to know the world of metal, an interesting thing is revealed: the toughest rumbles are sometimes the softest.
| Directing | Kati Grönholm | Director |
| Writing | Kati Grönholm | Writer |
| Production | Staffan von Martens | Producer |
| Crew | Otso Reunanen | Cinematography |
| Editing | Kristiina Nisula | Editor |
| Art | Mathias Heinänen | Graphic Designer |
| Sound | Joonas Jyrälä | Sound |
| Sound | Joonas Jyrälä | Sound Mixer |
| Crew | Christoffer Abrahamsson | Cinematography |
| Crew | Anna Wikman | Cinematography |
| Editing | Anssi Rautio | Colorist |
| Production | Camilla Nordenswan | Production Coordinator |