When a third victim is found stabbed to death in the span of one week, police officers Kata and Arnar come to realize that they’re dealing with Iceland’s first serial killer.
They make for an unlikely pair, but as they slowly start connecting the dots, the trail leads them to a mysterious and abandoned Boy’s Home named “Valhalla”.
All the murder victims are somehow connected to Valhalla and horrendous crimes that occurred there, dating back 35 years.
But as the past now catches up with the present, many more are in danger.
