Snapped: Killer Couples (2013)

S3E29 Doof Dynasty

Title: Doof Dynasty Plot: Set in the bygone era of feudal China, Princess Isabella holds a dual role as a leader while Master Perry has renounced his warrior lifestyle. When Phineas and Ferb see Doofus Khan abduct the Princess, they seek out Master Perry for guidance. Determined to learn his combat skills, they enlist his help to mount a rescue mission, aiming to free Princess Isabella and protect their homeland from tyranny.