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.
S04, E25 (First Aired: Nov. 25, 2014)
After Doofenshmirtz is defeated, a new threat in the 2nd Dimension emerges, leaving it up to Phineas, Ferb, Candace and her resistance fighters to defeat this new foe.
S04, E18 (First Aired: Jun. 16, 2014)
When Isabella and the Fireside Girls' marionette show turns out less than spectacular, Phineas and Ferb offer their help; Perry tries to stop Doof from winning the Grand Prix.