15-year-old Italian girl Melissa (Mar í a Valverde) lives with her mother and grandmother. Her life is dull and even boring. Every day this innocent girl longs for a romantic love. One day, when Melissa and her friends attended a party organized by her classmates, she met the handsome boy Daniel (Primo Reggiani). It's just that the flower of love didn't bloom as expected. Melissa had a humiliating sexual experience, but she was infatuated with the cynical boy ever since. In the days that followed, Melissa could attract Daniel's attention, and Daniel humiliated her in all sorts of ways. After understanding Daniel's mind, Melissa retaliated by indulgence, even writing every sexual experience in her diary. This film is based on the real girl's diary that once caused a sensation in Europe-"combing your hair 100 times before bed".