
Beforeigners follows a new phenomenon that starts happening all over the world. Powerful flashes of light occur in the ocean, and people from the past appear. They come from three separate time periods: The Stone Age, The Viking era and late 19th Century. No one understands how this is possible, and the people from the past, called "beforeigners", have no memory of what's transpired. Only one thing is certain: they keep coming and there is no way back.A couple of years later, Alfhildr, who comes from the Viking Age, is teamed up with burned-out police officer Lars Haaland as part of the police department's integration scheme. While investigating the murder of a beforeigner, they begin to unravel a larger conspiracy behind the origin of the mysterious mass arrivals.

A dead woman floats ashore at Tjuvholmen, and Lars Haaland has to investigate with his new partner: Alfhildr Enginnsdottir from the Viking Age.

The investigation leads Lars and Alfhildr down into Oslo's new and multitemporal criminal underworld.

Lars and Alfhildr finds a new main suspect in the Tjuvholmen murder: a rich entrepreneur from the Stone Age.

When Lars's daughter is involved in a mysterious accident at sea, Alfhildr has to seek Norse help to continue the investigation.

In the hunt for answers in the Tjuvholmen case, Lars becomes his own worst enemy.

The hunt for the Tjuvholmen killer is coming to an end, and Alfhildr must face a hard truth.

Lars is hired to help Alfhildr investigate a brutal murder, which turns out to have ties to 19th century England. Re-Christianizing Norway turns out to be more difficult than Olav Haraldsson imagined.

A gruesome letter leads the investigation in a new direction, and Lars discovers that the British police officers may not be who he thought they were.

The hunt for the fake policemen, Ben Joseph, takes Alfhildr and Lars to London, where they gain important information about the New-Luddites' methods. Ingrid decides to tell the Norse weatherman Sturla about her pregnancy.
Complete episode guide for Beforeigners with detailed information about every season and episode including air dates, summaries, ratings, and streaming availability in Germany.
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An unregulated interrogation causes the Chief of Police to take Lars and Alfhildr off the case, but with Jorn's help, they soon make an important discovery. Meanwhile, the physicist John Roberts trawls the streets of Oslo.

Lars and Alfhildr realize that if they want to find out the truth, they can not trust anyone, so they have to resort to unorthodox methods. A police operation at the Greenland Metro station has unforeseen consequences.

Alfhildr wakes up in a highly unexpected situation. Is she ever going to make her way home? Pushed to the limit, she makes a profound discovery about herself.