E1
The boys decide to ramp up their local summer block party with supersized attractions.
E2
The kids work to save Mom after she is hit by Doof's inator.
E3
The kids build a giant submarine sandwich submarine while Doof steals food.
E4
Candace tries to bust the boys while taking her driving test, and Doof causes chaos in traffic.
E5
The boys build an endless ice luge to beat the heat while Doof brings oil to a waterpark.
E6
Candace and Doof see the same psychologist, who thinks their experiences may be connected.
E7
The boys build a giant zoetrope that goes on an adventure of its own.
E8
The kids build a massive bookcase that gets attacked by an army of Doof-plants.
E9
The boys bring Perry to the vet for a checkup and build a pet wash while they wait.
E10
Carl tries to help Perry stop Doof while working three other part-time jobs.
E11
The Flynn-Fletchers take a cruise while Doof steals shrunken goods.
E12
Isabella struggles to lead the Fireside Girls on her own while Doof renews his evil business license.
E13
Candace puts Mom in a Candace costume in hopes that she'll finally see the boys' invention.
E14
Stacy takes on an agent role with OWCA to rescue Perry from some evil scientists.
E15
After Doof turns into a Mothman and eats Perry's hat, they pay a visit to the OWCA Haberdasher.
E16
The boys build a space adventure film set to help Baljeet learn to act.
E17
Meap enlists Candace and the kids to help bust his nemesis Mitch, before he can steal a long-lost treasure hidden somewhere on Earth.
E18
The kids and Candace each have a sleepover party on the same night.
E19
The kids build a western town while Agent P is captured by Doofenshmirtz's swamp-dwelling cousin, Bubba Doof.
E20
Buford's Candace suit comes to life and tries to take over the real Candace's life.
E21
Candace ignores her brothers for a day in order to help her Mom with a bust of her own.
E22
Vanessa and Doof travel to Drusselstein while the boys dig for Mom's lost wedding ring.
E23
The kids build a bird mansion for a rare macaw while Doof deals with giant praying mantises.
E24
Doof's dream-project-inator misfires and projects people's dreams for all to see.
E25
Doof becomes the center of his own solar system while Irving tries to impress Phineas and Ferb.
E26
Doof invents an inator to give Roger his personality, but it accidentally hits on Phineas and the gang.