A Fairly Odd Movie: Grow Up, Timmy Turner!

Thirteen years after the timeline and finale of the original series, Timmy Turner has grown into a 23-year-old adult, but maintains a lifestyle of a 10-year-old, despite being an adult. He has done so to keep his fairy godparents. Timmy's refusal to mature greatly irritates his parents (who desperately encourage him to move out) and Jorgen von Strangle, who is constantly scheming to entice Timmy into giving up his fairies.