Arctic Circle

Nina Kautsalo has returned to Ivalo, as she is named the new police chief. When the local pharmacist is found murdered, Nina gets to investigate her last case with her old partner Aikio.

The secret of the murdered pharmacist leads Nina to investigate the car testing in Ivalo. She encounters the American engineer Brendan she saved years ago. Nina wrestles with a major secret.

The police have two murder cases on their hands, both with apparent connections to the car testing. Nina agrees to go out with Brendan. Hamaria's son Perttu is bullied at school.

The CEO of car manufacturer Pharada arrives in Ivalo to launch a new project, but the press conference gets a bizarre twist. Nina and Brendan grow closer. Perttu is bullied even more brutally.

Pharada security continues their search of the test car. Nina embarks on a reckless rescue attempt. Marita is about to collapse under her construction project. Perttu comes to a desperate conclusion.

Pharada is getting ready for the launch event of their new car. When Nina finally discovers secrets from the past, she has to race against the clock to stop an impending murder.