Perry s worst fear comes true when Phineas and Ferb finds out that he is in fact Secret Agent P, but that soon pales in comparison during a trip to the 2nd dimension where Perry finds out that Dr. Doofenshmirtz is truly evil and successful.

Phineas and Ferb: Across the Second Dimension is a fun-filled platforming and combat game where players can be one of eight characters including Phineas, Ferb or Master P as they use gadgets and combat maneuvers to defeat the evil Dr. D and his minions.