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.

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.