Picking up two years after the second season, police duo Andri and Hinrika get drawn into a war in the remote highlands, where two rival groups fight over specific pieces of land, but for very different reasons.

A sheep farmer's attack on a government minister leads Andri to Iceland's remote highlands, where a worker at a local power plant is found murdered.

A small town inspector's list of suspects grows as he becomes ensnared in a web of secrets and betrayals involving a mysterious death.