"On Vacation" is an exciting book about the adventures of three children during the summer vacation. The main characters, Anna, Petro and Marichka, decide to spend an unforgettable summer, but they cannot even imagine what surprises this time has in store for them. First loves, mysterious crimes, unexpected meetings - every day is filled with new experiences. The author perfectly conveys the atmosphere of the summer holidays, where every moment can become extraordinary. Will the heroes be able to find a way out of the difficult situations that await them? This book will captivate the reader from the first pages and will remain in the memory for a long time after reading it.