After Bjørn dies by a lethal shot, Asgeir's wish of a new and safe life for him and his daughter ends quickly. The internal investigation against him is his smallest problem.

Asgeir, police officer with the special unit, wants to start a new life with his daughter Michelle in placid Vestvik in Norway. Instead he is confronted with a radical right-wing terror cell.

Ragna reveals how far she is willing to go to become part of the group and continue her mission; when Asgeir's identity is leaked, neither he nor his daughter are safe anymore.

Ragna travels to Germany with Ole and Brehme, where the parliamentary election is imminent. The radical right-wing terror cell is planning to change Europe forever.

Brehme knows that the cell was infiltrated and does everything to find the traitor. Ragna is suspected, as well. Meanwhile, ordered by Inger, Asgeir is coming to Berlin as a back-up for Ragna.

After Jan has been identified as an informer, Ragna has no time to catch a breath. She does everything to find out what the radical right-wing terror cell is planning next.

Following the presumably Islamist attack on the right-wing populist candidate, Germany is upside down. However, the cell is planning something much bigger to finalize the swing on the right.

Now it is clear what the cell is willing to sacrifice to change the political and social state in Gernany and Europe radically: the life of more than 1000 children.

Asgeir is in Lofoten, where he follows a money trail to get a hold of Ziminov; Ellen is on leave, but she is restless and eager to return to work; the growing number of online threats against Jonas worries the Ministry of Justice.

New clues lead Ellen and Asgeir to Budapest, where they are to arrest Ziminov with the CIA's help; Chief and Ellen are concerned about Asgeir's behaviour when he will face Zimino; Jonas must meet with PST with regard to his own safety.

When Ellen and Asgeir learn that they have fallen into a trap, they must make an unlikely ally to escape; the Minister of Justice and the PST face the repercussions of Budapest's events; Tarje gets new information that completely changes his life.

Ellen goes undercover again to track down the infamous Mateusz Krajewski; Ziminov and Asgeir run into difficulties at the border; in Norway, Tarje is in a tough spot where he has to choose between being loyal to his sister and his best mate.

Ellen has taken Krajewski and his wife hostages; Tereza and Asgeir must infiltrate a highly guarded warehouse in order to find proof; the NATO summit put the Norwegian government under extreme pressure; the Minister of Justice has bad news for Jonas.

Poland is in revolt and the European democracy is in jeopardy; Ellen attempts to stop the attack; Asgeir asks Chief to help him; the NATO summit is about to begin as the Minister of Justice makes a crucial decision.