Doctor De Soto and his wife treat the toothaches of animals large and small. His Expertise is so great that his fortunate patients never feel any pain. Since he’s a mouse, Doctor De Soto refuses to treat animals who have a taste for mice. But one day, a fox shows up and begs for relief from the tooth that’s killing him. How can the kindhearted De Sotos turn him away? But how can they make sure that the fox doesn’t eat them once his tooth is fixed? Those clever De Sotos will find a way.