Step-brothers PHINEAS and FERB, aspire to make every day of their summer vacation spectacular by devising imaginative creations, such as building the world’s largest popsicle or a full-size rollercoaster. Their bold escapades are interrupted by their jealous older sister CANDACE, whose goal in life is to get the boys in trouble with their mom. While nine-year-old PHINEAS is a bundle of engaging energy, Ferb is more a “man of action”, whose loyalty to his older step-brother, precludes him from speaking very often. Accompanying the boys on their adventures is PERRY their docile pet playtypus who leads a secret life as a government agent.