When an old man is found dead on the road - seemingly run over by a Hungarian au pair - police investigator Anna Fekete is certain that there is more to the incident than meets the eye. As she begins to unravel an increasingly complex case, she's led on a deadly trail where illegal immigration, drugs and, ultimately, murder threaten not only her beliefs, but her life. Anna's partner Esko is entrenched in a separate but equally dangerous investigation into the activities of an immigrant gang, where deportation orders and raids cause increasing tension and result in desperate measures by gang members - and the police themselves. Then a bloody knife is found in the snow, and the two cases come together in ways that no one could have predicted. As pressure mounts, it becomes clear that having the law on their side may not be enough for Anna and Esko.