Phineas and Ferb construct a rollercoaster, inspired to create a better one after being unsatisfied with a past one that they saw at the county fair. Meanwhile, Perry stops Dr. Doofensmirtz from reversing the Earth’s rotation with a large ball of tinfoil. The ball picks up the rollercoaster, stopping Candace from busting Phineas and Ferb.

Phineas and Ferb construct a Backyard Beach in order to survive the intense heat wave that has struck their city. Meanwhile, Perry has to halt the destruction of all the lawn gnomes in the tri-state area by Dr. Doofenshmirtz. When Candace’s friends tell her Jeremy is at the backyard beach, Candace decides to interfere and have fun, until Mom arrives, Dr. Doofenshmirtz's invention sends all the local lawn gnomes out of an artificial volcano, and Perry drains out all of the water.

Phineas and Ferb's song "Gitchee, Gitchee, Goo" becomes a one-hit wonder and brings them worldwide fame, while Candace wins a chance to sing on stage with them during the auditions for a reality music competition. Meanwhile, Doofenshmirtz turns his building into a giant robot to wreak terror upon the Tri-State Area.

The boys transform Mom's car into a remote-controlled race car and enter it into a race. Meanwhile, Doofenshmirtz uses his new invention, the Deflate-inator, which is curiously mounted to a blimp, to try to deflate everything in the Tri-State Area.

Candace stars in the movie The Princess Sensibilities. However she finds out that new directors Phineas and Ferb have changed it to The Curse of the Princess Monster. Meanwhile, Doofenshmirtz creates an Age-Accelerator-inator to age cheese, but ends up trying to age Perry.

When Buford challenges Phineas to a thumb-wrestling competition, Phineas receives training by boxing champion Evander Holyfield. Doofenshmirtz creates a hypnotic device to control people's minds so they will be forced to celebrate his birthday and clean up afterwards.

The boys plan to carve Candace's face into Mount Rushmore for her birthday. Perry tries to prevent Doofenshmirtz from boring a tunnel to the People's Republic of China from Mount Rushmore.

The boys clone themselves as Phinedroids and Ferbots (robots) so they can get more projects completed. Doofenshmirtz tries using a giant magnet to erase messages he left on his girlfriend's answering machine.

Candace tries to become a fashion model, while Phineas and Ferb create a fashion collection entitled "Summer All the Time". Doofenshmirtz designs a machine to create clones of himself so they can wait in line for him.

As a side-effect of Doofenshmirtz's plot to use termites to destroy all the wood in the area to help his new aluminum-siding business, Phineas, Ferb, and Isabella try to wrangle a herd of cattle from a ranch that were set free by the termites destroying their barn.

The boys use a snow-cone machine to create a Winter paradise during the middle of Summer in their backyard, Candace tries to pursue Jeremy (who she thinks dropped her for a Swedish exchange student), and Doofenshmirtz tries to melt chocolate with a machine made from laser pointers.

The boys create a circus for the neighborhood after their original circus plans are canceled, while Jeremy gives Candace wild parsnips without knowing that she is allergic to them. Doofenshmirtz creates a device to make people's voices higher so his own voice will seem lower but instead, it gets even higher.

Note: This episode is available on The Daze Of Summer DVD along with the Toy To The World episode.

The boys visit an Egyptian-themed movie theater and attempt to get a mummy of their own, but they end up capturing Candace, who is wrapped in toilet paper. Doofenshmirtz tries to raise the city's water level by destroying a beaver dam so his real estate will become beachfront property.

Note: This episode is available on The Fast & The Phineas DVD along with the Flop Starz episode.

Candace and her best friend Stacy travel on a tour bus together with the Bettys, but later realize they're only being used as servants. Meanwhile, the boys accidentally discover Perry's lair and are sent onto a mission intended for him.

The boys try to make a giant ice-cream maker for Isabella after her tonsils are taken out. Doofenshmirtz tries to build a giant space laser, while, Vanessa, is staying with him for the weekend. Meanwhile, Candace, as usual, is trying to bust Phineas and Ferb, at the same time as Vanessa is trying to bust her dad, Dr. Doofenshmirtz. Ironically, Linda Flynn-Fletcher and Charlene Doofenshmirtz are attending a cooking class together.

After Candace sarcastically suggests that they can make a better toy than the Har D Har Toy Company's "Shimmy Jimmy", Phineas and Ferb design an "inaction figure" based on their pet platypus. Meanwhile, Doofenshmirtz plots to build toll booths to enter and exit the Tri-State Area so he can become rich.

Note: This episode is available on The Daze Of Summer DVD along with the Jerk De Soleil episode.

Candace and the boys visit their grandparents at a lake house and the children try to scare her with a fake Bigfoot, but then their grandma's twin scares them with a more lifelike Bigfoot. Perry is trapped in Doofenshmirtz's love triangle as he bursts in while on a date.

The boys invent a monster truck for Candace to practice driving, but soon her practice run turns into a massive racing rally. Doofenshmirtz tries to discover investors for his line of monster trucks that are actual monsters. Note: This episode is available on The Daze Of Summer DVD along with The Ballad Of Badbeard episode.

Guest star: Billy Ray Cyrus as Buck Buckerson

Candace plans a special birthday party for Mom, and even a song, but Phineas and Ferb's plans keep upstaging her own. In the end, though, they let Candace give Mom the best gift of all. Doofenshmirtz creates a shrinking machine (without the usual inator suffix) that will make whatever he hates (pelicans, instruments that start with the letter 'B', blinking traffic arrows, etc.) shrink to the size of an atom.

The boys build a shrinking submarine so they can go inside Isabella's pet chihuahua and retrieve a sash it ate, but they accidentally end up in Candace's stomach instead while she is on a date with Jeremy. Meanwhile, Perry tries to stop Doofenshmirtz's plans to destroy anyone who can't make up their mind with his newest invention, realizing that it may destroy Phineas and Ferb.

Phineas and Ferb decide to repair a time machine at a natural history museum, sending themselves and Candace to the Jurassic Age. Meanwhile, Dr. Doofenshmirtz replaces Perry the Platypus as his nemesis with a secret agent panda, causing Perry to become depressed.

The boys locate their parents' favorite band, Love Händel, to perform a reunion concert in the backyard to make up for their Dad wedding anniversary. Meanwhile, Doofenshmirtz plans a surprise birthday party for, Vanessa, also planning to launch Perry the Platypus on a giant firecracker as the grand finale.

Guest stars: Jaret Reddick, Carlos Alazraqui and Steve Zahn as the Love Handle Members

The boys build tree-houses for themselves and Candace. Dr. Doofenshmirtz plans to use brainwashed pigeons to destroy a celebration in honor of his brother.

The boys set out on a high-seas adventure after learning from their grandpa about a mysterious pirate, Badbeard. Meanwhile, Candace accidentally witnesses one of Perry and Dr. Doofenshmirtz's battles after getting infected with a psychedelic moss.

Note: This episode is available on The Daze of Summer DVD along with the "It's a Mud, Mud, Mud, World" episode.

The boys stage a chariot race through Danville's streets after learning about ancient Greece. Perry finds his latest enemy to be, not Doofenshmirtz, but instead one of his creations: a giant, robotic, mild-mannered businessman named Norm.

Note: This episode is available on The Daze Of Summer DVD along with the Leave The Busting To Us episode.

Candace uses a reality show, Bust Em!, to secretly film her brothers designing a white-water rafting ride. Doofenshmirtz tries to create a new ice age via weather pellets.

Note: This episode is available on The Daze Of Summer DVD along with the "Greece Lightning" episode.

The boys build a roller derby rink for their grandma, who once was on a championship derby team, so she can skate against her onetime rival, Jeremy's grandma. Candace is worried that Jeremy will stop liking her if his grandma loses. Doofenshmirtz believes a statue of a bearded Rutherford B. Hayes is mocking him for being unable to grow facial hair.

The boys decide to spend the day doing absolutely nothing, but Candace doesn't believe them and ends up constructing something of her own to try to bust them. Meanwhile, after being considered one of the ugliest people in the region, Doofenshmirtz plans to use an "ugly-inator" to make everyone uglier than he is in order to make himself the most handsome person in the area.

Phineas and Ferb revive a caveman from a glacier, but the caveman gets loose into a costume party Candace is attending, and she mistakes him for Jeremy. Meanwhile, Dr. Doofenshmirtz plans to destroy all people dressed as sandwiches.

When Buford's goldfish, Biff, goes missing, the boys help him find it. Meanwhile, Dr. Doofenshmirtz tries to re-gain his evil reputation after accidentally saving a kitten who fell from a tree.

Phineas, Ferb and Candace visit their grandparents in England and the boys create a Renaissance fair, where Candace ends up in a jousting tournament. Meanwhile, Perry goes undercover at an evil scientists' convention to track down Dr. Doofenshmirtz.

Note: This episode is available on The Daze Of Summer DVD along with the I, Brobot episode.

Candace acquires footage from a traffic camera showing proof of her brothers' antics. But Perry, using Dr. Doofenshmirtz's robot Norm, steals it for himself so it can be destroyed since it contains evidence he is a secret agent.

Note: This episode is available on The Perry Files: Animal Agents DVD along with the Bowl-R-Ama Drama episode.

The boys build the world's largest bowling ball and pins to try to beat the world record and get into "The World's Most Pointless Records." Candace test-drives the bowling ball, which she plans to show to Jeremy, when she accidentally disables an internal gyroscope, she loses control and rolls around through downtown Danville. Meanwhile, Doofenshmirtz tries to use giant robotic penguins to freeze Danville so he can sell addictive hot chocolate for a million dollars a cup.

Note: This episode is available on The Perry Files: Animal Agents DVD along with the Traffic Cam Caper episode.

Phineas and Ferb create a sports competition that puts boys against girls to see which are the better athletes due to Isabella and Buford arguing about who was better. Doofenshmirtz tries to win a dog show.

Phineas and Ferb build an observatory and plan to etch their faces in a comet; Candace is physically tormented by Jeremy's 'criminally-insane' sister Suzy while on an outing with him. Doofenshmirtz buys all the steaks in the city so he can mass-market glasses made from them, and also creates a giant heat ray.

Guest star: Phil LaMarr as the street performer

When the town's only miniature golf course is closed, Phineas and Ferb build a giant miniature golf course. Candace is sick with a cold so Stacy decides to talks the boys. Of course, Stacy fails to focus and plays miniature golf with the boys. Meanwhile, Doofenshmirtz moves into a house on the same street as the Flynn-Fletcher house.

After watching an old sci-fi film, Phineas and Ferb decide to build a molecular transporter, which ended up switching the minds of Perry and Candace into each other's body after they accidentally go in together. However, Candace is forced to spend most of the day as a platypus while Perry (in Candace's body) goes on a mission to foil Doofenshmirtz's newest scheme; to replace the Mr. Slushy Burger jingle in the statues of mascot "Slushy the Clown" with his own evil jingles.

Guest star: Rob Paulsen as the mad scientist

The boys help Ferb's grandfather live his life long dream—to jump a gorge in his motorcycle, the Holy Mackerel. Doofenshmirtz tries to kick sand all over a childhood bully's house.

Isabella has the hiccups and Phineas and Ferb build a haunted house to scare them away. Candace goes over to Jeremy's house, but is interrupted by his little sister Suzy. Dr. Doofenshmirtz tries to help his mentor by destroying his lab.

Note: This episode is available in the Bonus Features on The Fast & The Phineas DVD.

The boys learn about one of Ferb's Victorian ancestors, Ferbgor and Dr. Phineastein, who once created a giant platypus monster for a "Monster Ball". Meanwhile while locked in his lab, Doofenshmirtz tells Perry a loosely connected story about his ancestor Dr. Jekyll Doofenshmirtz, and his failed attempts to make a potion that could turn himself into a monster.^[9]

Phineas and Ferb help their friend Django display his artwork. Doofenshmirtz tries to impress his former Evil Science professor.

Phineas and Ferb create a superhero cartoon with exaggerated versions of themselves, their sister and their friends, while Dr. Doofenshmirtz creates a ray gun that makes people dance.

In an unusual role-reversal plot, Dr. Doofenshmirtz builds his own country on a giant inner tube and Vanessa tries to bust him. Meanwhile, Phineas and Ferb create a rainbow just for Isabella and learned that she actually said that she never saw a unicorn. Candace and Vanessa accidentally switch clothes at the dry cleaners. Perry is not able to go due to getting injured.

Lawrence buys a star for both Phineas and Ferb and Candace online, leading the boys to build a rocket to visit it. Meanwhile, Dr. Doofenshmirtz uses a space station robot to perform a shadow puppet show on the Moon to get back at a former classmate—who himself was a poor puppeteer with "huge hands", but still won over a girl who had been interested in Doofenshmirtz.

Candace finally busts Phineas and Ferb, resulting in them being sent to a militaristic reform school that stifles imagination and creativity. When Candace realizes what's being done to her brothers, she teams up with Jeremy to help set them free. However, this adventure turns out to be a dream of Candace's in a dream of Perry the Platypus's.

Baljeet felt bad when he got an A minus. When Baljeet enters the science fair with a design for a portal to Mars, Phineas and Ferb help him build it to scale so he can get his all-important grade. Meanwhile, Dr. Doofenshmirtz tries to win first prize at the fair with a giant baking soda volcano, and Candace competes with a girl for a job at Mr. Slushy Dawg.

Note: This episode is available on The Daze Of Summer DVD along with "Unfair Science Fair Redux".

Phineas and Ferb try to rescue Candace from Mars, who thinks that nobody, not even her friends, want to talk to her. Meanwhile, Perry helps Dr. Doofenshmirtz shop for supplies for his baking soda volcano that he believes will make him win the science fair.

Note: This episode is available on The Daze Of Summer DVD along with "Unfair Science Fair".