The magical mouse named Fairy is a faithful steward of the woods she lives in, teaching humans how to properly care for nature and acting as a helpful friend to the animals that reside there. One day she meets her friend Pérez, and the two set off on a magical adventure, the little mouse’s magical transformation into the Tooth Fairy. For English-language readers: In Spanish-speaking countries, it is not the Tooth Fairy who takes your tooth and leaves a small coin or gift behind, but a little mouse, “Ratoncito Pérez”. Therefore, Fairy’s transformation into a Tooth Fairy who can serve alongside Pérez provides an alternative, female role model for young readers and a model of how mice (and people!) from different cultures can work together and learn from one another.