Embla (11) and Adam (9) are detective partners who solve scary mysteries with their pets. However, the friendship is put at risk on a dark autumn night. Emblas track dog, Watson, comes home with Adam's rabbit in his mouth. The rabbit is dead! Embla must use all her cunning to save the friendship with Adam and at the same time save the dog from an uncertain fate.

Idunn travels to the secluded village Gunntra to bury her deceased father. They didn't speak for many years, while he was the local sheriff in Gunntra. Now he is dead. When she looks into his last case she finds horrifying statistics of disappearing children, and a theory that reveals a connection to the old mines.