Larry Guthrie, who loses his first love to the town hot shot, decides to win her back by volunteering with the children at her after-school program. When Larry accidentally tells the kids the Tooth Fairy is make-believe, he soon is transformed into a tutu-clad fairy with the "sentence" of collecting teeth.
When minor-league hockey player Derek Thompson -- who has a penchant for knocking out his opponents' teeth every time he plays -- disillusions a fan, he is sentenced to a stint for one week as a bona fide, tutu-clad, real-life tooth fairy. Soon, Derek is inspired to rekindle his youthful dreams.