Phineas and Ferb is an American animated comedy series about two stepbrothers, Phineas and Ferb, who embark on fun projects each day that annoy their sister Candace as she tries to bust them. Meanwhile, their pet platypus Perry secretly fights the evil scientist Dr. Doofenshmirtz as a secret agent. The boys' and Perry's plots intersect at the end of each episode to erase all traces of the boys' projects just before Candace can show them to their mother.