Eighteen-year-old Kasper is emerging from a deep depression when he lands his dream job at the local amusement park, working in their haunted house. It’s there he meets Iris, a kindred spirit who shares his fascination with the eerie and the unexplained—notably, the defunct death metal band Dark Cruelty, which his father, Håkan, once belonged to. Together, they delve into the shadowy past of the band and its charismatic lead singer, Grim, whose mysterious death at nineteen shattered the promising band and left nothing but shadowy rumors.

The narrative unfolds in dual timelines, juxtaposing the explosive energy of Stockholm’s 1980s death metal scene with Kasper’s present-day quest for the truth. Haunted by the shadows of a story that feels all too real, Kasper’s search for answers spirals into an obsession. Can he unravel the mystery of what really happened to the enigmatic Grim, or will the same darkness that claimed Grim threaten Kasper as well?