In Moscow, in a modest apartment, live Boris, Sonya, and their son Denis. Denis is eighteen, but he still hasn’t gotten serious about life—he spends his days strumming his guitar and writing songs. Sonya teaches Russian language and literature at school, runs a theater club, and even tutors on the side. Meanwhile, in the town of Vyazov lives the family of Gleb Dorokhov. Gleb is married to Sonya’s sister, Raisa. Our story begins when Marina arrives in Moscow, while Denis goes to Vyazov. There are many reasons for this: Marina needs to enter university and study, while Denis badly needs to get on the right track—Sonya hopes that Gleb will give him some real work. Everything would seem fine, but the audience already knows there is a secret that has bound these two families together for many years…