The tango king Harry Koivikko was found dead six years ago in a sleazebag motel, with a knife is his back. The biggest manhunt in the county faded away without results. Jussi Vares gets a phone call from a down-and-out journalist; the informant tells Vares he knows the murderer. Then the journalist disappears without a trace and Vares has to face the biggest challenge of his career. To add insult to the injury, an old acquaintance Veikko Hopea gets his first prison furlough…

The film follows Finnish army machine gun company in Continuation War against Soviet Union, 1941–1944. Based on Väinö Linna's best selling novel Tuntematon Sotilas (The Unknown Soldier) and the novel's uncensored version, Sotaromaani (A War Novel).