Timmy and Ferb is the 24th fanmade episode of The Fairly OddParents from Season 12 and a Phineas and Ferb crossover.
Timmy want's life to be a secret agent agency. But by mistake, when wishing, he accidentally remembers about learning about platypuses saying 'I wish I haad a secret agent life (platypus)". Then, Perry the Platypus and Dr. Heinz Doofenshmirtz from Disney's Phineas and Ferb appear inside Timmy's room. Perry takes off his hat chattering. Then, Timmy shows Doof to his dad. While Mr. Turner says: "Get OUT Dinkleberg!". Mistaking Doofenshmirtz for Dinkleberg, he turns Heinz into jail for being inside Timmy's room. And so, Phineas, Ferb and Candace are going into Dimsdale while riding a brand new rollercoaster. Timmy goes into the rollercoaster and befriends Phineas Flynn and Ferb Fletcher. He also gets a glimpse of Perry putting on his fedora and taking off with a jetpack saying: "Hey! Look! The platypus flew off into the sky!". But Phineas and Ferb just say they don't see anything and continues on with the ride.