Lynn is a girl who is growing up and watching herself change. As she enters her teenage years, she receives a visit from a curious fairy, and together they embark on a small adventure to uncover the secrets of the upcoming period.

With the help of the fairy, Lynn will learn many things about female anatomy and find answers to important questions about menstruation and the changes that will happen in her body.

Additionally, the fairy will provide Lynn with exercises and advice to manage the pain and flow of her period, as well as the changes in her mood.