Summer, sea, holiday home. Lena meets Arthur. The days fly by instantly, and now weekdays are coming. However, the "holiday romance", as Arthur considered his acquaintance with Lina, was not over. Chance forced me to find Lina in the city. Upon learning that the girl is ill, amazed by her courageous restraint, Arthur finds a real sense of love for the first time.

The film is based on Yuri Tomin’s story “Everything’s the Other Way Around Today” and tells the tale of children who decide to stage a “Disobedience Day.” Galka, Yurka, and Slavik make a pact to listen to no one and do only what they want. Their bewildered parents and teacher are slow to understand what’s come over the kids, but eventually manage to persuade them to abandon their impulsive idea.