Lida is tired of this Yashechkin! He broke his best friend's nose, smeared paint on things, and was rude to the teacher. Neither his mother nor the director could cope with him. And he didn’t even listen to his classmates. When Yashechkin disappeared, everyone breathed a sigh of relief and lived peacefully. But Lida could not ignore someone else’s misfortune. She had to go back in time and risk a gold medal in swimming. The path is difficult when you return to save someone who does not want to be saved. But Lida is not used to giving up and is ready to climb even to the top of time, simultaneously protecting the world from reboot. The cover design uses the author’s personal photographs, processing and design by Anastasia Bushmakina.