Lena Kuznetsova rejoiced at the warm summer days - of course, next to her beloved guy, a new girlfriend, with whom she can go to the beach and swim from morning to evening. Life is beautiful and wonderful! It would seem that nothing can darken the girl’s mood... But one day everything turns upside down: the friend stops talking, the guy hangs up, and even his faithful friend Kostya does not believe the words. “Is it really someone’s machinations?” - Lena guesses and decides to figure it out. But the most important surprise awaits the girl ahead. For middle school age.