Two couples met on the vacation in the resort town. Vadim is a successful cardiologist, his wife is an actress. "Beauty" and the "beast", as they call themselves, because the husband is much elder. Eugene is a military pilot, his wife is an the artist. They are a very nice family with a cute daughter. Uncontrollable passion flashes between Eugene and Vadim’s wife. They leave their families. Passion destroys and creates. The nature of the senses is like cardiogram with its peaks, falls, straight segments. They want to find happiness, but torn between love and duty.