Fly on the Wall: Phineas and Ferb create a giant tire swing contraption; Buford messes with the wiring and creates a ray which turns Candace into a fly; Candace has a perilous adventure trying to get back to the boys to get switched back. My Sweet Ride: Phineas and Ferb complete the reconstruction of Dad's classic car entry for the Doo-Wop Hop event. Perry foils Doofenshmirtz's plot to win the Doo-Wop Hop car show, which involves turning the other entries into rust, by tricking Norm the Robot who is operating the "Rust-inator".
Doofenshmirtz hires an Outback platypus hunter who "goes rogue," forcing Perry and doctor to team up to save themselves from the boomerang-throwing maniac. Baljeet is unable to make decisions, fearing the wrong choice on even simple questions will send his life down the wrong path. Phineas and Ferb create a device that lets him see both possible outcomes of his decisions. As a side effect, it also creates a crowd of Baljeets.