Phineas and Ferb Season 2 Episode 26
Phineas and Ferb's Musical Cliptastic Countdown
Perry the Platypus is reassigned and forced to move to the Quad State area with a new family and battle a new villain, the Regurgitator. During his new assignment, Phineas, Ferb, and Candace put in every effort to find him, hoping he'll return to them.