The television movie is set in the city of Dimmsdale and centers on the series' main protagonist Timmy Turner with his fairy godparents Cosmo and Wanda and his fairy godbrother Poof. In the movie, Timmy is now 23 years old but is still in fifth grade with his fairy-obsessed fifth grade teacher Mr. Crocker. Despite being grown up, Timmy finds a loophole in the fairy rulebook Da Rules: if he continues to act like a kid, he will still get to keep his fairies. However, the dilemma rises when Tootie, who was once a dorky girl when she was 10 years old, returns to Dimmsdale as an attractive woman. Timmy falls in love with her, a sign that he is growing up to an adult, which means he is closer to losing his fairies. Meanwhile, an oil business tycoon named Hugh J. Magnate, Jr., who teams up with Mr. Crocker, plans to use Timmy's fairies' magic in order to promote his oil business.
as Timmy Turner
as Tootie
as Poof (voice)
as Cosmo
as Cosmo (voice) / Mr. Turner
as Wanda
as Wanda (voice)
as Mrs. Turner
as Elmer
as Ravi
as Jorgen Von Strangle
as Waiter
as Veronica Star
as Hall Monitor
as Mayor
as Janice
as Denzel Crocker
as Howie
as A.J.
as Goon #1
as Hugh J. Magnate
as Vicky
as Chester McBadBat
as Katie
as Mom On Beach
as Poof (voice)
