1La boule de neige
Seth veut ramener de la neige à sa mère pour qu'elle l'expose sur son étagère; après plusieurs échecs, il utilise la science pour trouver un moyen de rapporter la neige à la maison intacte avant qu'elle fonde.
2Seth est malade
En voulant attirer l'attention de ses camarades de classe pendant ses exposés, Seth fait beaucoup trop d'efforts et tombe malade; c'est finalement en affrontant sa rivale que Seth comprend que l'avis de ses camarades n'est pas important.
3Les bœufs-laids
Lorsque Seth faisait une découverte scientifique, il se retrouve coincé dans le gymnase avec les Fungies; la ville est envahie par des monstres appelés bœufs-laids.
4Pam et les œufs verts
En explorant, Seth trouve un oeuf et veut savoir ce qu'il y a dedans; l'instinct de Pam lui dit de s'asseoir sur l'oeuf pour qu'il éclose; Seth va devoir apprendre à lui faire confiance.
5La moustache
Alors que Seth a volé la moustache de Pascal lors d'une journée à la plage, des insectes pensent que c'est un adulte; Seth apprécie le respect et l'attention qu'on lui porte, mais est-il prêt à rentrer dans la vie adulte.
6Emmène ton enfant au travail
En voulant aider Nancy à l'hôpital, Seth crée un véritable chaos, car il joue au docteur sans l'aide de sa mère; il va devoir admettre ses erreurs et écouter les conseils de sa mère pour arranger les choses.
7Le voyage du Fungie-voile
Seth et Claudette sont punis après avoir interrompu la classe et doivent effectuer un travail de groupe durant la fin de semaine; en se retrouvant perdu sur un bateau en pleine mer avec Claudette, Seth doit écouter les autres.
8Des fourmis dans les jambes
Pendant qu'il garde ses petits frères, Seth n'est pas attentif et les perde au milieu d'une armée de fourmis; pendant sa mission sous couverture pour récupérer les jumeaux, Seth apprend à apprécier le temps qu'il passe avec eux.
9Le fantôme de la mine
Seth mène un groupe de camarades dans une mine hantée afin de leur prouver que tout a une explication scientifique et qu'il n'y a aucune raison d'avoir peur des fantômes.
10Le short numérique Fungies
Pam se découvre un talent pour les jeux; la visite d'une usine de fabrication de chaise artisanales donne des idées à Seth pour augmenter la production parfois au détriment de la qualité; Seth découvre une tortue et la montre à toute la classe.
11Le corps de Monsieur Tronc
Seth wants to help sad, immobile Sir Tree feel the joy that comes from helping others, so he has the brilliant idea of planting Sir Tree inside Pascal’s body! But when Sir Tree’s absence causes soil erosion and mudslides, Seth has to convince Sir Tree that the best way to help is to return to his hole before Fancytown is destroyed.
12Commandant Beefy
Seth, eager to explore the stars and find a fellow explorer, sends a signal to space. But the explorer who receives the message, Commander Beefy, has his own shady plans for Earth.
13Le concours du plus spécial des Fungies
Seth, frustrated that the Fancies are too caught up in the Fanciest Fancy pageant to listen to his warning about a fungus-eating bacteria, enters the pageant to get his message out. But when he gets sucked into the pageant, he’ll have to face the consequences of getting distracted.
14Un, deux, trois, serpent
When Seth agrees to let an athletic snake replace his arm so he can finally be good at volleyball, he learns he doesn’t need a fancy snake arm to make his teammates happy; he just needs to try.
15Nevin dans son cocon
After a beautiful statue makes Nevin self-conscious about his own looks, Seth helps seal Nevin in a cocoon so that he may turn into a beautiful butterfly.
16Cool attitude
When Pascal becomes obsessed with a group of cool kids, Seth promises to use his science skills to help Pascal become cool. But is coolness as cool as it seems?
17La sirène en scène
Seth is having a hard time sharing a room with messy Pascal and needs a change. But instead of being honest about the situation, Seth makes Pascal a mermaid tail so that his brother can finally move out - into the ocean!
18Joyeux anniversaire Nancy
Seth wants his mom to have the best birthday ever, so he creates his own currency in order to buy her an expensive gift. But he learns a little too late that counterfeiting is a crime, putting Nancy’s birthday at risk of being ruined.
19Une nouvelle arrive en ville
When Pam is chased by a huge scary dinosaur, a concerned Seth invites her to live with him in Fungietown. Pam adapts to city living, but the Fungies’ newfound love for Pam attracts attention, putting the entire town in danger!
20Atelier jardinage
Seth tries to get the kids interested in his pumpkin garden by making it into a contest, but a healthy competition soon turns to all out war! Can Seth reunite the class to save the town from a new danger?
- 21
Libérez Poulpite !
Seth takes a baby squid from the ocean to study and ends up becoming attached to the little guy. But when Squidly grows real big and attracts the attention of an intergalactic zookeeper, Seth must free his friend in order to save him.
- 22
Les Fungie Scouts
Seth creates The Fungie Scouts so his friends can learn how to survive in the wild. But after enlisting the selfish Commander Beefy as scout leader, the kids wind up in danger! Seth must take back control in order to save his friends!
- 23
Les mamies ennemies
The kids discover that Nevin’s Granny Grancie has an estranged sister/best friend, Granny Grindle. Nevin and Lil’ Lemon, with Seth’s help, vow to reunite them! But getting these old friends back together may test their own friendship.
- 24
Le calendrier des pompiers
While distracted by a new scientific endeavor, Seth winds up ruining his mom’s treasured fireman calendar! After his attempt to make it up to her puts them both in danger, Seth finally learns the importance of communicating with his mom.
- 25
Le monstre du puits
Seth wants to study the old well, but Nancy forbids it! So Seth lies and says he won’t. But when Pascal gets stuck in the well, Seth’s little white lie grows! Soon he has the whole town up in arms about a terrible “well monster.”
- 26
La reine Seth
Seth, sick of doing chores for his mom, wishes he was in charge. But when an act of kindness makes Seth queen to a hive of bees, he quickly learns: heavy is the head that wears the crown.
- 27
Le petit garçon de Monsieur Tronc
Seth agrees to take care of Sir Tree’s wooden boy, Boy Joy, but quickly pawns him off on Mertha. When Seth discovers that Sir Tree needs his boy back in order to survive, he must stage a heist to steal Boy Joy back before it’s too late!
- 28
Le message de Seth
Seth writes a play about the importance of dental hygiene and gets Pascal to direct. Soon the brothers’ differences lead to Pascal quitting. But when the star of the show gets stage fright right before curtain, Seth has to get Pascal back!
- 29
P'tit Citron président !
Seth bets Mertha that with him as his campaign manager, Lil’ Lemon will beat her in the class election! But when Mertha’s dad gets involved, things get out of hand and Seth soon learns politics isn’t worth putting his friend in jeopardy!
- 30
Les longues jambes
While playing in the river, Seth, Claudette, and Mertha discover the longest pair of Fungie legs they’ve ever seen! Now the three friends struggle over who gets to keep them.
- 31
La cabane de Monsieur Tronc
Sir Tree is lonely, so Seth builds a treehouse in his branches to keep him company. It’s such a hit, soon all of Fungietown moves in! But when the added weight strains Sir Tree, can Seth convince him to take better care of himself?
- 32
Les médailles du Seigneur Pince
When his medals are stolen during a Fungietown school assembly, Seth and Claudette start an investigation to find the culprit before everyone is thrown into the Triloknight’s dungeon!
- 33
La visite de James Cool
Seth wants some attention, but his family’s too busy. But when a lucky explosion forces Cool James to stay with him, Seth gets the attention he craves! That is until Seth sees how much his family loves Cool James.
- 34
Le club des dino
Pressured to choose a real job, Seth instead decides to be a dinosaur like Pam! Soon, all the kids follow suit, but cause so much trouble, Fungietown bans dinosaurs! But Pam can’t stop being a dinosaur and is thrown in jail!
- 35
Le Commandant Laser
Seth gets super into solving puzzles and winds up trying to solve the ultimate puzzle: fixing Commander Beefy’s relationship with his sister, COMMANDER LAZER! Will Seth’s plan work? Or will it end up putting him and his friends in danger?
- 36
Fungieville
Seth’s learning about Fungie history in class, but there isn’t enough history! So he assembles an archeology crew to help him dig! But when the kids unearth the ancient city of Fungopolis, will they be stuck in the past forever?
- 37
Le Fungithon
Seth loves how fast Pam can run, and to prove she’s the fastest, creates a race all across Young Earth! But when Pam, who’s never lost a race, is challenged by a speedy newcomer, will Seth’s training be enough to make sure she wins?
- 38
Radio RFUN
Overworked radio DJ Jason Fungie needs a break, so Seth and his friends take over RFUN public radio! But when things backfire and the station is at risk of being shut down, the kids have to raise the money to keep RFUN alive!
- 39
Où est passé le coach ?
The school's Fungieball coach is missing! And worse–Seth’s mom is his replacement! Champsa, who shares a bond with Coach, teams up with Seth, forming an uneasy alliance of Sports and Science in an attempt to find Coach Croach!
- 40
Une soirée chez Nevin
Seth is off to his first sleepover at Nevin’s. But when Seth’s determination to have the “perfect sleepover” leads to calamity, Nevin may never get to have friends over again.