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, E10 (First Aired: Jul. 11, 2009)
Phineas and Ferb build a musical device to find Perry; the family becomes marooned after a storm shipwrecks them on an island.
S03, E08 (First Aired: Jul. 15, 2011)
Candace spends the entire day in the backyard so that she can bust her brothers; Dr. Doofenshmirtz thinks Vanessa overhears him say he would rather have a son to do his evil bidding.