Dzvinka goes to the neighbors across the sky - to the Blue Planet - to find the missing screw by the moon-flying FlightOne. There, she meets Myshko, who is the only child who dreams of spending the holidays on the Moon. Dzvinka is glad that she will have a friend. The only thing that upsets her is the naughty behavior of Myshko. So she creates the "Commandments of the Moon Fairy", finding out about which one can stay on the Moon, and then invites the boy to her home. Myshko tries to follow Dzvinka's rules and saves FlightOne life.

In a casual atmosphere, Dzvinka and Myshko learn the rules of decorum sitting on the table. Myshko, as always after arriving from the Moon, shows in kindergarten changes in behavior for the better. In parallel, there are lines about the wonderful recovery of Mishko's grandfather and the friendship of Snail and Khodolun.

Dzvinka and Myshko learn neatness. While playing detective, Dzvinka guesses everything that Myshko did during the day, looking at the spots on his clothes. Myshko connects to the game and tells everything that Dzvinka and Snail did. Then kids in kindergarten learn how to do laundry during a fun dance performance.