A secret Soviet Institute conducts scientific and occult experiments on animals and human beings to create the perfect person. The KGB general and his aides turn a blind eye to erotic adventures of the director of the Institute, scandalous debauches of prominent scientists and their cruel and insane research. One day, a radical ultra right-wing group arrives in the laboratory under the guise of test subjects. They get a task - to eradicate the decaying elements of the Institute’s community, and if needs be, destroy the fragile world of secret Soviet science.

Nikita Nekrasov is a scientist, a theoretical physicist who studies our world and other possible worlds. He refuses to make a choice between mathematics and physics, between one woman and another, as he ponders the existence of the multi-universe. At scientific conferences, attended by eminent foreign scientists and a rising younger generation of physicists alike, Nekrasov gets carried away debating the beauty of string theory. He attempts to explain to all of his women – Katya, the librarian, Zoya, the scientific secretary, Svetalana, the head of department – about the theory of his own polygamy, and the possibility of having enough feelings to satisfy everyone.

Within the top secret Institute of Physics Problems, the scientist Nikita Nekrasov is visited by his wife and small children. While away from his family the physicist has managed to fall in love with other women. In open conversations with his spouse – in the bedroom, the dining room, and while out walking – he attempts to convince her of the legitimacy of polygamous relationships, and to test the limits of her unconditional love.

It is 1953, Stalin has just died. It is a troubled and uncertain period for the whole of the Soviet Union, particularly for the state security services. In the Institute, a secret research facility, the scientists continue their theoretical and experimental work. Every night they strain their ears to listen for footsteps in the dark corridors: who have they come for this time? Who has reported on who? Having survived the fear and humiliation of an interrogation, the Head of the Theoretical Department, Andrei Losev, refuses to cooperate with the security services, only to face a new ordeal back in his own home.