About the book: 2020 / The fourth book tells how Delta’s life develops after graduation. Horan punishes her for flying over the city at night, but allows her to participate in the Martial Arts Championship. The sudden departure of the Teacher did not stop Delta from going to her friend Nonika. A joint trip to Kanators was supposed to be a vacation for the young Marcina. But in the end it turned out to be a very unpleasant adventure. After all, it turned out that there is someone in the world who knows about the Delta much more than she herself.