Phineas Flynn (Vincent Martella) and Ferb Fletcher's (Thomas Brodie-Sangster's) backyard is the neighborhood hotspot for all of their cool inventions. Meanwhile, their elder sister Candace (Ashley Tisdale) is obsessed with busting her brothers for all the inventions to her mom once and for all. Simultaneously, their secret-agent pet, Perry the Platypus (Dee Bradley Baker) fouls the "evil" schemes and plans of Dr. Heinz Doofenshmirtz (Dan Povenmire).