Phineas and Ferb is an American animated musical comedy series created by Dan Povenmire and Jeff "Swampy" Marsh. It follows two inventive stepbrothers who spend their summer vacation building elaborate projects and inventions, while their sister Candace tries to bust them. Meanwhile, their pet platypus Perry secretly works as a secret agent battling the inept Dr. Doofenshmirtz. The show is known for its humor, catchy songs, and inventive episode structure.