Phineas and Ferb's sister, Candance, is determined to be next Super American Pop Teen Idol Star.But her plans for fame are foiled when Phineas and Ferb hit the stage with their band. Then Candance's dream of becoming a famous movie star turns into a nightmare when Phineas and Ferb are chosedn to direct her in her breakout role. Will she ever beat her brothers at their own game?