The animated comedy Phineas and Ferb follows the adventures of stepbrothers Phineas and Ferb who spend their summer vacations inventing wild contraptions, much to the chagrin of their sister Candace, while their pet platypus Perry moonlights as a secret agent battling the nefarious Dr. Doofenshmirtz; each episode follows a similar structure of the boys building an invention, Candace trying to tattle on them, and Perry battling his arch-enemy, all while promoting a message of creativity and problem-solving.