In the remote regions of Lapland, in the heart of Finland's frozen landscapes. Policewoman Nina Kautsalo stumbles upon a dying prostitute in a small house isolated in the wilderness. The criminal investigation takes an unexpected turn when it is discovered that the victim is infected with a deadly virus. Thomas Lorenz, a German virus specialist, is sent to Lapland to study the virus. Nina and Thomas find themselves at the center of a highly unusual criminal investigation that will lead them to break the law.