Episode Summary. Phineas and Ferb meet their future nephews Xavier and Fred. Phineas and Ferb are in the backyard with Baljeet, making a superstructure. The following is a list of episodes from the Disney Channel Original Series Phineas and Ferb, which ran from August 17, 2007 to June 12, 2015. The show ended with a. Phineas and Ferb go on their biggest journey yet, into another dimension! When the boys finally discover that their beloved pet platypus Perry is a secret agent who. Shop all your favorite Phineas and Ferb gear now at Disney's Official Store! Find Phineas and Ferb Toys, Clothes, Accessories and more online now! Phineas and Ferb make the most of their summer by creating fun everyday, while their pet platypus moonlights as a secret agent! Phineas and Ferb is an American animated comedy-musical television series. Originally broadcast as a one-episode preview on August 17, 2007 and again previewed on. Phineas and Ferb invent, scheme and stay one step ahead of their bratty sister. Meanwhile, their pet platypus plots against evil Dr. Doofenshmirtz. Phineas and Ferb is a Disney Channel and Disney XD animated television series that centers on two stepbrothers, their sister, a pet platypus, and their adventures. Play your favorite online games and activities from the Disney XD series Phineas and Ferb! Phineas and Ferb Wiki is a website anyone can edit about the hit Disney series, from episode summaries to character biographies.