Magna is seeking answers to her father's mysterious disappearance many years ago. Birk is battling outside forces to save his mountain home. Their quests lead them on a trail of an insidious environmental crime.

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.