Cartas a Ratón Pérez

What happens when your natural enemy becomes the one who needs your help the most? The Tooth Fairy is used to receiving letters from children offering him teeth in exchange for gifts. But one day, a very strange letter arrives: a cat named Black Spot "asks" him for a tooth, not an offer. At first, the Tooth Fairy thinks it's best to ignore the request. A toothless cat is less dangerous! But when a second letter arrives, and then a third one stained with tears, he discovers the truth: Black Spot dreams of joining the choir of singing cats, but without teeth, his meow is off-key. Will the Tooth Fairy be able to overcome his age-old fear to help his natural enemy? Will he be able to brave the perilous night to complete an impossible mission?