Marina is a tour guide at an environmental education school, she loves children very much, but she can't give birth to her own - the problem is her husband Vadim. On the advice of a friend, Marina decides to give birth to another man in secret from Vadim... 9 months later, when she had already given birth to a healthy baby, during a routine examination Marina was given a terrible diagnosis. Realizing that she will soon die, and her husband and son will be left without love and care, she decides to find Vadim's first love.