Valkyrien

Ravn becomes desperate when he is told that his wife's illness cannot be cured. The sudden change in diagnosis arouses his suspicions. Ravn refuses to give up, establishing an illegal underground clinic with help from an Oslo Emergency Board member.

Against Leif's objections, Ravn decides to reveal their secret to Vilma's research colleague Unn. Leif offers to help a man who has been separated from his pregnant wife. Leif makes increasing demands on Ravn and Unn.

The clinic has opened and Leif brings in patients. Ravn and Unn do the best they can to provide treatment. The treatment of Vilma advances and Leif comes under police suspicion. Vilma's daughter Siv has questions for Ravn he cannot answer.

Leif is forced to reassess his leadership style following a humiliating conversation with his brother. Teo endangers himself and the clinic in his search for Marit. A patient offers Ravn a lead that may help Vilma.

Vilma becomes infected when a patient enters the clinic with a virus. Ravn is forced to make a tough decision. Unn battles to control the outbreak of the infection, but Leif wants to implement a different plan.

Ravn and Leif desperately search for Vilma after she disappears. They rush to find her before someone else. Police officer Per discovers the tunnels and bomb shelters underground. Teo is left alone in hte clinic.