About the book: year / The heroes Tanya Zabotkina and Petya Vorobyov, already known to us, continue to be friends even after the pioneer camp. Tanya's father is seriously ill, and only a miracle can save him, namely a magic medicine made by the Doctor-Pharmacist from the Blue Balls pharmacy. But in order for him to prepare this medicine, he needs permission from the Senior Herbal Advisor. To get it, Tanya and Petka will have to overcome their own fears and cope with the machinations of the Great Envious Man.