Head Olya Kotova is experiencing the death of her best friend. She cannot accept this, which is why she promises herself to restrain her emotions. In this book you will find out whether Olga managed to fulfill her promise and whether she will be able to manage the class even after another girl took her place, much different from Olya Kotova, and whether Olga will be able not to envy, but to be a hidden leader?! You will definitely find answers to all these and other very different questions in this book.