Lena is a primary school teacher, married to businessman Vadim Kruglov. Her happiness is marred only by the absence of children, but neither treatment nor several attempts at IVF bring results. Lena takes the failure hard and at first does not notice the oddities in her husband's behavior. But soon she realizes that her marriage is a lie. A rival appears - Nina, Vadim's lover, ready to do anything for the sake of her crazy love. To fight not for life, but to the death.