Maxim's bride tragically died right during the wedding - the girl fell from the roof of the restaurant. The police suspect an accident, but the Ivanovs are sure it's murder. It turns out that both her stepsister and Maxim's ex-girlfriend could have killed the bride. But there is a problem: that night there was no one near the bride on the roof... And the Ivanovs themselves have a crystal wedding under threat: Valera has lost his wedding ring and is afraid to confess to Darina. Tamara Petrovna decides to help her son-in-law, but it turns out that the ring has disappeared not only from him...