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.