Johan Falk hasn't been working for over a year since he resigned from the police. Most of all he wants to move out to the countryside, but fate has a different thought.

Max is a handsome young man who, after a fateful tryst with a German soldier, is forced to run for his life. Eventually Max is placed in a concentration camp where he pretends to be Jewish because in the eyes of the Nazis, gays are the lowest form of human being. But it takes a relationship with an openly gay prisoner to teach Max that without the love of another, life is not worth living.

When the charred remains of woman are found, Säpo, the Swedish Security Services, suspect Gunvald Larsson of being mixed up in her murder. The dead woman was wanted internationally and a member of a group of militant eco-activists carrying out attacks around the world. Gunvald sets out on his own to find the woman's murderer, with Säpo on his heels. Martin Beck is ordered to arrest Gunvald and his loyalty to his colleague is now put to the test.