Perry's secret identity as Agent P is exposed by Phineas and Ferb, but this revelation takes a backseat to a journey to the 2nd dimension where Perry discovers the true extent of Dr. Doofenshmirtz's malevolent nature and sinister accomplishments.
Phineas and Ferb the Movie: Across the 2nd Dimension
In this thrilling adventure, Phineas and Ferb stumble upon Perry's secret agent life, only to find themselves trapped in an alternate dimension where Doofenschmirtz reigns supreme over the tri-state area.
