Elliot, a 25-year-old British boy, discovers that he has a secret half-brother, Fyodor in Saint Petersburg. Elliot travels to the city, meets his brother and falls in love with Anya, Fyodor's girlfriend.

An anthropologist investigates the origins of human evolution. She had suffered a mental trauma during her childhood when her father, a submarine captain, died during the war. This trauma periodically destabilizes her condition. The ghosts of a prehistoric past and a violent death collide in the subconsciousness of the scientist to give birth to an unexpected theory of the origins of human beings.