In a lush Swedish summer idyll, a family is selling its summer cottage. Something has happened, something terrible that shatters the family, something that the youngest daughter Johanna in particular must learn to live with if she is ever to move on.

An enthusiastic three year old child is playing in the grocery store and doesn't wanna leave. Then his young and tired mom just leaves the store without him.

Two middle-aged couples arrive at Noah's marriage counselor, who runs a country house. The couples have come to get help but it turns out that Noah has planned the meeting to reveal a secret, which will have major consequences.

A bicycle messenger sees a girl being brutally assaulted and dragged into a van. She immediately calls the police, but unfortunately the girl is found too late. It turns out that the murdered girl has been the victim of a serious sexual crime. Detective Inspector Irene Huss and the rest of the team begin to look for the murderer, but have very few clues to go on. When another young girl is murdered in a similar way, the team realizes that they are dealing with a sexual predator. How does he get in touch with the girls? Why do they agree to meet him? Why are they wearing special underwear?