When the Nazis secure a heavy water plant to realize their plan to create an atomic bomb, the Norwegian Allies struggle to sabotage the operation.

Olle Hulten wakes up drunk on the ferry between Sandefjord and Strömstad. In his car is a gun and a lot of money. Simultaneously the police is chasing a robber whom have hijacked a car and is holding the security guard at gunpoint.

In the near future a new phenomenon starts happening all over the world with powerful flashes of light occurring in the ocean and people from the past mysteriously reappearing. Called "beforeigners," these people come from three separate time periods: the Stone Age, the Viking era and late 19th century. A couple of years later, Alfhildr – who comes from the Viking Age – has to partner up with a burned-out police officer, Lars Haaland, to investigate the murder of a beforeigner. The pair begins to unravel a larger conspiracy behind the origin of the mysterious mass arrivals.

When Emma hears that her father has stopped doing his job as a wolf researcher, she takes her son Leo to Østbygda to find out what's going on. At the same time, a young boy disappears without a trace from the village.

The young mothers Ingri and Mathilde meet as they both give birth on the same day. There's a mix-up with their names but the mix-up is discovered fast and is the start of a fun and beautiful friendship we follow through their maternity leave.