Larry Guthrie, heartbroken after losing his first love to the town's charming heartthrob, takes a leap of faith by volunteering at her after-school program. While trying to impress the kids, he mistakenly reveals that the Tooth Fairy isn't real. As a consequence, Larry finds himself magically transformed into a tooth-collecting fairy, complete with a frilly tutu. Now, he must navigate this whimsical predicament and prove that he can be the fairy they need, all while attempting to win back his beloved.