Maxime is 10 years old. Her favorite things in life are books and cats. Like Mathilda, the heroine of her favorite book, she feels different. She would like to be like the other children but the noise they make hurts her ears, so she plays with the characters in her books. One day, Maxime discovers bowls filled with cat food hidden all around in the alley. Intrigued, she then embarks on a thrilling investigation. In no time, she meets a very special person...