In Bratislava, Teddy Pedersen, a middle-aged, Danish university lecturer, receives a visit from an Eastern European woman who turns out to be his half-sister. Father to both of them was a Danish SS officer who had officially been declared dead in 1952, but had in fact lived on in Yugoslavia for many years. In Copenhagen, Teddy's older sister is arrested on suspicion of being a Stasi agent, and a murder leads Teddy - and the Danish intelligence service - to investigate the relationship between these two - the woman in Denmark and the woman in Bratislava. The link between them proves to have far-reaching personal and political consequences.