Valera became seriously interested in betting on horse racing. Darina and Tamara Petrovna, in turn, decide to organize a home sweepstake for ... Valera. The Ivanovs' new client, the director of the hippodrome, is in trouble: his expensive and rare horse is suffering from an unknown disease. The Ivanovs help the client find the culprit.

Darina's friend Lesya is visiting the Ivanovs. Lesya wants to use Darin's gift for her own personal purposes. Meanwhile, a new client, a closed and shy girl, followed the tradition to get to know a man, but something went wrong and an unusual guest settled in her house.