Yura Otvertkin, a romantic from Tsarevo-Kokshaisk, is obsessively in love with aeronautics. In St. Petersburg, disguised, he pretends to be the ace Ivan Piramida. He has to perform at the festival, but he only knows how to fly "according to the books", but he manages not to lose face. After a lot of ups and downs associated with his similarity in makeup with a famous criminal, Yura confesses everything to his beloved and flies already under his real name.