Anna, a midwife at a London hospital, tries to find the relatives of a newborn baby whose teenage mother died in childbirth. The only clue is the deceased girl's Russian-language diary. Her search leads Anna into the dark underworld of Eastern European organized crime, where she meets the mysterious Nikolai, who works for a powerful criminal clan. Confronting the ruthless laws of the mafia puts her life and the lives of her loved ones in jeopardy.