As the Swedish town of Kiruna sinks, Frigga finds herself torn between her family and her job as security chief at the world’s largest underground mine.

The unknown, large mafia organization is now showing its true face. The pressure that GSI and John Falk and his family have put on the organization, makes them fight back…

The police station is locked down. A snitch is compromised. Drastic and unexpected events take place. Both inside and outside the police station.

Falk is blackmailed into smuggling a truckload of guns from Latvia.