At the height of the winter season, the famous Alpine resort suddenly turned into an arena of dangerous, frightening events. It began with the mysterious death of a Danish skier during a ski jump. An accident? But why does one of the witnesses stubbornly insist that he heard a shot? After all, the deceased was clearly not shot... The town is feverishly discussing what happened, and the Hauptkommissar of the criminal police, Ennerwein, begins an investigation. His team needs to break the chain of mysterious incidents inextricably linked with anonymous messages.