At the heart of the drama is the plight of two young Moldovan sisters sold into sexual slavery and trafficked through Romania, Serbia, Albania, Bosnia and Italy to the dark side of London. The reverberations of their story take us from big business in America to corruption amongst the international peacekeepers in Europe. Daniel Appleton is a researcher and investigator for a London-based charity, while Madeleine Harlsburgh is the boss of the charity foundation of a US defence contractor who begins to suspect her employers’ motives may not be what they seem.