1Les montagnes russes
Phineas et Ferb bâtissent des montagnes russes. Doofenshmirtz enveloppe la côte ouest de la ville d'aluminium dans l'espoir d'inverser le sens de rotation de la Terre.
2Une plage dans le jardin
Phineas et Ferb construisent une plage au fond de leur jardin. Doofenshmirtz vole tous les nains de jardin du quartier.
3La prochaine star
Phineas et Ferb décident de former le groupe de musique éphémère. Pendant ce temps, Perry doit arrêter le robot géant de Doofenshmirtz, déguisé en intérimaire.
4Fonce Phineas, fonce
Phineas et Ferb participent à une course automobile avec la voiture familiale. Doofenshmirtz prévoit de dégonfler tous les objets gonflables de la région.
5Candice, Princesse Maudite
Phineas et Ferb deviennent réalisateurs. Doofenshmirtz ne donnant plus de nouvelles, Perry se rend chez lui pour en connaître la cause.
6La Rage De Vaincre
Phineas enters a thumb-wrestling competition with a local bully, while Doofenshmirtz creates a hypnotic device to control people's minds so they will sing him Happy Birthday.
7Candice perd la tête
Phineas et Ferb décident de sculpter le visage de Candice dans le Mont Rushmore pour son cadeau d'anniversaire. De son côté, Doofenshmirtz tente de creuser un tunnel jusqu'en Chine.
8Phinédroïdes et Ferbots
Phineas et Ferb se clonent pour pouvoir mener à bien davantage de projets. Doofenschmirtz plane au-dessus de la maison de sa petite amie avec un énorme aimant pour effacer les messages qu'il a laissé sur son répondeur.
9Victimes de la mode
Candice devient mannequin et est obligée de porter des tenues conçues par Phineas et Ferb. Doofenshmirtz conçoit une machine pour créer des clones de lui-même, afin d'éviter de faire la queue.
10Les héros de l'ouest
Lorsque Doofinshmirtz lâche son armée de termites pour dévorer tout le bois de la région, Phineas et Ferb utilisent leur passion naissante pour la vie de cow-boy afin de ramener du bétail.
11La neige en été
Les garçons utilisent une machine à glace pour créer un paradis hivernal en plein été dans leur jardin. Doofenshmirtz essaie de faire fondre du chocolat avec une machine fabriquée à partir de pointeurs laser.
12Allergic cirque
Les garçons organisent un cirque pour le quartier après l'annulation de leur projet initial. Doofenshmirtz invente un appareil pour amplifier la voix des autres et ainsi faire paraître la sienne plus grave.
13Cherche momie désespérément
Phineas and Ferb 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, while Doofenshmirtz tries to raise the city's water level so his real estate will become beachfront property.
14Le passage secret
Ferb and Phineas accidentally discover Perry's secret lair and are thrust into a spy mission of their own. Meanwhile, Candace travels on a tour bus with a girl band called "The Bettys"
15C'est l'émotion
Phineas and Ferb make the biggest ice cream maker for Isabella after her tonsils are taken out. Doofenshmirtz's daughter, Vanessa, spends the day at his lair and tries to convince his ex-wife that he's evil.
16À quoi bon jouet
Based on the fact that a platypus doesn't do very much, Phineas and Ferb create a wooden toy version of Perry to sell to a toy company. Meanwhile, the real Perry heads off to stop Doofenshmirtz from building the Great Wall of the Tri-State Area and starting up toll booths at the only exits.
17Big Foot
Candace and the boys visit their grandparents at a lake house and the boys try to scare her with a fake Bigfoot while Doofenshmirtz goes out on a date and Perry gets ends up in the middle of it.
18Quat' quat' Candice
Phineas and Ferb create a monster truck for Candace to practice driving while Dr. Doofenshmirtz tries to find investors for his line of monster trucks that are actual monsters, with a trump card to take down the competition.
19Meganniversaire maman
Candace plans a special birthday for Mom, and even a song, but Phineas and Ferb are always getting in her way of what she planned, unintentionally topping everything. Meanwhile, Doofenshmirtz creates a shrinking machine that will make whatever he hates implode.
20Voyage au centre de Candice
When the boys build a shrinking submarine to retrieve Isabella's sash from Pinky's stomach, they end up in the wrong place.
21Ennemis Pour La Vie
Phineas and Ferb find a time machine at a museum and travel back to the Jurassic Age. Meanwhile, Perry is sad when Doofenshmirtz replaces him with a new nemesis, Peter the Panda, so he confides in a relationship talk-show host.
22Retour au Rock'N'Roll
The boys and Candace hatch a plot to reunite their mom and dad's favorite band for a wedding anniversary concert.
23Tout le monde aime Roger
Phineas and Ferb build super tree houses for themselves and Candace, but things get a little out of hand when a treehouse fight instigates. Meanwhile, Dr. Doofenshmirtz plans to ruin a ceremony in his brother's honor.
24La malédiction de la vieille barbe
The boys set out on a high-seas adventure after learning about a mysterious pirate from their grandpa. Meanwhile, Candace spies Perry and Dr. Doofenschmirtz up to their old tricks, but is it all in her head?
25La Course De Chars
The boys stage a chariot race through the town's streets after learning about ancient Greece. Meanwhile, Dr. Doofenshmritz creates a giant robot named Norm to destroy Perry, once and for all.
26Télé Irréalité
Candace uses a reality show to secretly film her brothers designing a white-water rafting ride. Meanwhile, Perry must crush Doofenshmirtz' dream of becoming a magician, as well as dominating the tri-state area.
27Grand-Mère Contre Grand-Mère
Phineas and Ferb set up a roller derby rink for Grandma Betty Jo.
28Une Journée Tranquille
Phineas and Ferb decide to do absolutely nothing for the day. Candace questions her purpose in life after realizing that she can't bust her brothers for doing nothing. Meanwhile, Dr. Doofenshmirtz is tired of being the ugliest person around, so he invents a device that can turn anything and anyone ugly.
29Un Néandertalien Affamé
While on an archaeological dig, the boys discover a caveman who falls in love with Candace, who is dressed as a cave girl for costume party. Then, Phineas and Ferb assist Buford in locating his missing goldfish.
30À La Recherche Du Poisson Perdu
When Buford's goldfish goes missing, the boys help him find it out at sea. Meanwhile, Dr. Doofenshmirtz tries to destroy a tape of him 'saving' a kitten from a tree.
31Le fantôme du chevalier noir
Phineas, Ferb, and Candace go to a Renaissance festival and Phineas and Ferb get Candace to go into a jousting tournament.
32Vidéosurveillance
Perry wants to destroy footage from a traffic camera to keep his identity a secret, as Candace tries to use the film in hopes of proving her brothers create unusual stuff. Then, the guys decide to build the largest bowling ball and pins in the world, while Doofenshmirtz wants to rid the world of rainbows.
33Le Bowling Géant
Phineas and Ferb build the world's largest bowling ball and pins. Meanwhile, Doofenshmirtz wants to use his latest invention to freeze the Tri-State Area so the people will buy his hot chocolate.
34Les Garçons Contre Les Filles
The guys decide to hold a competition between the girls to see which are better at sports. Also, the build a telescope in the backyard. Then, Jeremy's sister is tormenting Candace. Doofenshmirtz wants to be the winner of a dog show, and makes an attempt to liquefy a steak.
35La Comète Kermilian
The boys build a telescope, while Doofenshmirtz tries to liquify steak. Meanwhile, Candace has another encounter with Jeremy's younger sister, Suzy.
36Mini-golf, maxi effet
Phineas and Ferb create the world's largest golf course, and since Candace is sick, she asks her best friend Stacey to bust the boys for her.
37Dans la peau d'une fille
Phineas and Ferb create a teleporting machine, but it ends up switching Candace and Perry's brains.
38Le poissonnier
The boys are helping Ferb's grandfather live his life long dream - to jump a gorge in his motorcycle, the Holy Mackerel. Meanwhile, Perry sets out to stop Dr. Doofenshmirtz from exacting another petty revenge that dates all the way back to the sandbox.
39Peur sur Danville
When Isabella falls prey to hiccups, Phineas and Ferb gather the kids together to help scare them out of her, using a remote controlled haunted house. Meanwhile, Doofenshmirtz sets out to destroy his mentor's hideout, so that no one could discover his secrets, but not if Perry has something to say about it!
40Miss monstre
The boys learn about one of Ferb's Victorian ancestors, who helped a scientist create a monster. Meanwhile, Doofenshmirtz recalls the story of his great-great-grandfather Dr. Jekyll Doofenshmirtz.
41L'art et la manière
When Django feels down for not being able to draw art on the same scale as his father, Phineas and Ferb get some big ideas for his piece and the famous "unpainted desert". Meanwhile, Perry faces off against Doofenshmirtz, as he does his best to impress his visiting evil professor.
42Les studios Phineas et Ferb
The boys create a cartoon and cast themselves as superheroes and Candace as the villain, while Perry attempts to defeat Doofenshmirtz, who has taken control of the power of dance.
43Vive Doofania
When Doofenshmirtz's brother Roger is elected mayor, he decides to build his own country, where he can rule over everything, but how will he stop him when Perry is having trouble entering his hideout? Meanwhile, Phineas and Ferb, in an attempt to help Isabella see her "first" rainbow, create the Rainbow-enator, which harnesses the power of their breakfast cereal to make the light show. The strangest anomaly of the episode, however, is when Candace and Vanessa manage to get their clothes mixed up at the dry-cleaners, resulting in a backwards day for everyone.
44Une Balade Dans L'Espace
The boys build a rocket ship to get a good look at a star named for them, and Candace accidentally takes a ride with them just as she is trying to find the courage to ask Jeremy to a dance, while Isabella tries her best to do the same with Phineas. Meanwhile, Perry must stop Dr. Doofenshmirtz, who, not only is conveniently in space too, but has created a massive spacestation in an attempt to get revenge on "Huge-Hands-Hans".
45Lavage De Cerveaux
After taunting the boys for going to search for the "Lake Nose Monster", Candace begins freaking out on her lifeguard job, seeing the monster at every turn. Meanwhile, Dr. Doofenshmirtz tries to remove all the zinc from the lake, though even he's not sure why.
46La fête de la science
Phineas and Ferb help Baljeet build a portal to Mars for a special Summer science fair. Candace competes against another girl for getting a job at Mr. Slushy Burger. Meanwhile, Doofenshmitz builds a bicarbonate volcano for the science fair, in yet another attempt to redeem himself from his embarrassing childhood, where we discover where the -inator suffix originated from.
47La fête de la science (Une autre histoire)
When Candace believes that no one wants to be around her anymore, she quickly steps through Baljeet's portal to Mars, where she is quickly heralded among the martians. Meanwhile, Perry accompanies Dr. Doofenshmirtz to help build his evil contraption for him to stop faster, with slightly less than pleasing results.