Darina wants to fulfill her long-held dream of flying with Valera in a hot air balloon. But there is a problem: Valera is terrified of heights. Meanwhile, Irina turns to the Ivanovs: her husband, a racing driver, is in terrible apathy.

A young and talented Chinese language teacher appears at Valera's school, who is unexpectedly nominated for the Teacher of the Year award. Valera is trying to plot against a competitor. The Ivanovs are approached by the wife of the owner of a Chinese restaurant, who died from a knife wound. The Ivanovs help their client find the killer.