Phineas and Ferb The Movie: Across The Second Dimension
On the five-year anniversary of getting Perry the Platypus, Phineas Flynn and his stepbrother Ferb Fletcher accidentally catapult themselves into Dr. Doofenshmirtz’s building “Doofenshmirtz Evil Incorporated”. There Phineas and Ferb help Dr. Doofenshmirtz build an Other-Dimension-Inator and go to a parallel universe where a smarter and much more evil version of Dr. Doofenshmirtz managed to conquer and enslave the entire Tri-State Area, and Perry reveals his secret identity to protect Phineas and Ferb. Phineas’s sister Candace Flynn becomes convinced that there’s a “mysterious force” that makes everything Phineas and Ferb build disappear before she can show it to her mother. All four (and Dr. Doofenshmirtz ) end up having to work together to stop the parallel universe version of Dr. Doofenshmirtz from taking over Danville.