Premise: Phineas Flynn and his stepbrother, Ferb Fletcher, are determined to make every day of their summer vacation fun. They try building a full-scale roller coaster, becoming musicians, building a backyard beach, and traveling back in time to meet dinosaurs. Their family pet, Perry the Platypus, doubles as a secret agent and battles evil. Meanwhile, older sister Candace is tattling on them to Mom and Dad, though she can never seem to catch them in the act.
S02, E03 (First Aired: Feb. 21, 2009)
Candace uses Phineas and Ferb's newest invention to gain height she needs for a modeling career; the boys build an aquarium in their backyard.
S02, E04 (First Aired: Feb. 28, 2009)
Phineas and Ferb are inspired by Candace's dessert club; Candace and Stacey assume the roles of Sherlock Holmes and Watson to try to bust the boys in London.