1Piano
Nolik went to Katya's house to help fix the piano. But it seems that someone lives in Katya's house, too! Are the new Fixies? Shh... it's a big secret!
2The Parachute
Tweak and Geek convince Nolik and Simka to do some parachuting with them instead of going to Fixie School. Wondering why they have not shown up for class, Grandpus tracks them down and meets the twins for the first time.
3The Hook
Grandpus and Basiya's first meeting is rather tense when the two of them get into an accident as a result of a prank Tweak and Geek played with a hook on Grandpus' Fixieboard.
4The 3D Printer
On their first day of Fixieschool, Tweak and Geek play a trick on the other Fixie kids who have not met them yet pretending that one of them is actually a copy made in Professor Eugenius' 3-D printer.
5The Tooth
Katya, determined to stay up all night to meet the Tooth Fairy after losing a tooth, makes it difficult for both her Mom and Basiya to deliver her a gift.
6Dancing
Professor Eugenius ask Tweak and Geek to stop dancing in his laboratory because he thinks science and dancing don't mix. Tweak and Geek think Professor Eugenius actually doesn't know how to dance and they challenge him to prove otherwise.
7The Photo Editor
The Fixie kids are really excited to have Fire take their pictures and edit them in his photo editing program until they see the results of his "artistic" choices.
8The Trampoline
Toola is in a terrible mood and Simka and Nolik try different ways to raise her spirits. Nothing seems to work until she discovers the joy of jumping on a trampoline.
9The Secret Code
Nolik, Fire and Digit notice Tweak and Geek acting very strangely, using words they have never heard before. Fire is convinced the twins are up to no good and must be stopped. Digit figures out that the twins are actually speaking in code.
10The Present
Tweak and Geek find a gift they believe Basiya intends to give to her "favorite". But which of the twins does Basiya like most? Digit, Fire and Verda set up a competition to see which of the twins is the smartest, strongest, and prettiest.
11The Bones
Digit is going to check the ages of ancient bones in Eugenius' lab. When Tweak and Geek play a trick on Digit by building a creature from a different bones, Digit has trouble identifying what he is examining.
12The Eraser
Nolik is unprepared for his upcoming test at Fixie School and so Tom Thomas loans him his lucky eraser as a good luck charm.
13The Autopilot
When Geek gets his head stuck inside a pencil eraser he climbs on the back of Tweak to carry him to Basiya for help.
14Trash
Eugenius creates a recycling machine. Nolik thinks the machine is just a trick and flies inside to investigate. Eugenius, Simka and Toola are soon frightened that Nolik got recycled into a shoe.
15Perpetual Motion
After learning that Digit got time off of school for making an invention, Geek and Tweak claim to invent a perpetual motion machine so they can get time off as well. Digit thinks it can't be real and they might be faking it.
16La Energia
Queriendo conseguir sus propios pack-o-mats, Grandpus elabora una prueba para que Tweak y Geek construyan una planta de energía en miniatura. El ganador obtendrá el único pack-o-mat que tiene disponible.
17La tienda online
Cuando Tweak y Geek se enteran de que el profesor Eugenius no ha felicitado a Elisa por su doctorado, ordenan flores en línea, sin saber que están cargando el dinero a la tarjeta de crédito del profesor.
18El Trineo
Cuando Nolik desea que los Fixies tengan un Santa Claus como los humanos, Basiya y Grandpus planean sorprenderlo. Pero las cosas se complican cuando tanto Basiya como Grandpus llegan disfrazados de Santa.
19Los rayos X
Después de aceptar ayudar al Profesor Eugenius a probar su máquina de rayos X, Elisa se asusta cuando el rayo X de su mano parece mostrar engranajes en su interior. ¿Cómo podría saber que los engranajes son solo Tweak y Geek tratando de hacerse rayos X a sí mismos?
20La pantalla táctil
Tom Thomas está frustrado porque perdió la oportunidad de tomar una foto de un pájaro con su teléfono inteligente porque tuvo que quitarse los guantes. Simka lo ayuda a hacer un par de guantes que funcionen en una pantalla táctil.
21Ahorrando Energia
Después de tener una lección sobre la conservación de la energía en la escuela Fixie, Nolik les dice a Simka, Geek y Tweak que no puede hacer sus quehaceres hoy porque necesita ahorrar energía.
22El cumpleaños de Nolik
Nolik piensa que todos han olvidado su cumpleaños. Para empeorar las cosas, todos parecen estar burlándose de los desafortunados errores que cometió en el pasado. ¿Podría ser que todos realmente han olvidado el día especial de Nolik?
23El Hipo
Cuando Tom Thomas le hace una broma del Día de los Inocentes a Katya, ella tiene hipo. Nolik y Simka tratan de ayudarla a deshacerse de él.
24Memoria
La mamá de Tom Thomas le pide que tire las cosas que ya no necesita en su habitación desordenada, pero le resulta muy difícil debido a todos los recuerdos que tienen.
25La Camisa
Tweak y Geek convencen a Nolik de que las camisas crecen de plantas de algodón como una forma de engañarlo para que haga sus tareas. Cuando Katya descubre su truco, tiene un plan para dar la vuelta a la situación.
26The Air Conditioner
Right after Digit repairs Katya's air conditioner, Tweak and Geek get into an argument about whether the room should be hotter or colder. Their argument leads not only to them breaking the unit's remote, but the air conditioner itself.
27Comics
When Katya's Mom discovers a comic strip that Katya drew of Freak and Geek on her tablet, she wants to post it online to share with her followers, but this could expose the secret of the Fixies.
28The Roller Coaster
Digit and Nolik built a roller coaster that will be ready to ride after safety testing. Digit leaves to bring back equipment for the test and tells Nolik not to play with the roller coaster while he is gone, but it doesn't stop.
29Hide and Seek
Nolik wants to play hide and seek with Simka, but Simka is more interested in studying math. Nolik tricks Simka into going to the kitchen and leaving her Fixietab with him. He hides it and forces his sister to play hide and seek.
30Plaster
Tweak and Geek get themselves covered with plaster that Elisa is using to make a bust of Professor Eugenius. When Elisa discovers the tiny plaster "models" she decides she will paint them. Tweak and Geek need to figure out how to escape.
31The Cheat Sheet
Grandpus asks Simka to help Fire study for a math test. Fire discovers a cheat sheet Simka made with all of the formulas. Thinking that this is how Simka excels on her tests, Fire takes the cheat sheet to use on his test but gets caught.
32The Safety Harness
Fire gets upset when Nolik goes wall climbing with Tweak and Geek. Fire sends Nolik photos of him climbing mountains to make him jealous. When Nolik figures out the photos are fake, he confronts Fire over a video call.
33The Contacts
Katya's Mom is about to start her live stream, but discovers her headphones don't work. Tom Thomas offers to fix them, claiming to be a master repairman. He sneaks off for help from Tweak and Geek who discover the problem.
34The Hoverboard
Tom Thomas gets a new hover board but doesn't know how to ride it, so Nolik offers to help. Not having any success, Tom Thomas tells Nolik he is a bad teacher leading to a fight between the two.
35The Sneakers
Tom Thomas gets a video call from Katya. She shows off her new sneakers that light up. Not wanting to be outdone, Tom Thomas tells Katya that he too has light-up sneakers and recruits Simka and Nolik to make Katya believe his fib.
36Virtual Reality
When Tom Thomas tells Tweak and Geek that being a Fixie is so much easier than being a human, the twins create a virtual reality game in which Tom Thomas must travel through Katya's house as a tiny Fixie.
37The Tower
When Freak and Geek tell Grandpus they may be moving away forever with Basiya, Grandpus is distraught that he may never see Basiya again. Grandpus decides to build models of the most famous towers in the world to keep Basiya from moving.
38The Guitar
Mom goes out shopping and asks Tom Thomas and his dad to mop the floors and dust the house while she's gone. But the two are soon distracted when Dad finds his old guitar and asks Tom Thomas to sing with him.
39The Hologram
Fire is frustrated that Chewsocka continually interrupts a board game he is playing with Nolik. He sets up a hologram of food to distract Chewsocka. His contraption gets stuck on the poor dog's snout.
40The Weather Station
Katya's mom reads a beautiful weather forecast and suggests they go out for a walk. Determined to keep Katya from heading out, the Fixie twins hack into the station making Katya and her mom believe it is going to be a terrible day.
41The Voice Assistant
When Tweak and Geek hear Tom Thomas's mom speaking with a voice assistant, they think a new Fixie has moved into the house. But the twins are very confused by assistant's lack of desire to meet them.
42Snow
Nolik really hopes that this year his Fixie family can celebrate Christmas in the freezer where they can play with snow, but Masiya doesn't like this idea at all.
43The Pump
Tom Thomas is upset because he had a fight with Katya, and now he is not invited to her birthday party. Nolik suggests that he just go to her and apologize, but Tom Thomas says that he doesn't have a birthday present.
44The Flytrap
Toola is upset that Fire and Nolik are playing an abusive game with a live plant. She explains that the plant is a Venus Flytrap and it can actually catch them if they are not careful.
45The Quadcopter
Tom Thomas wants to ask Katya to go to the movies with him but doesn't have the courage to ask her directly. Nolik suggests he writes her an invitation and deliver it to her with his quad copter.
46The Swing
Masiya is worried that Nolik will get hurt swinging on a wire, and demands he gets down. Nolik refuses and actually falls. He doesn't hurt himself, but is still punished for misbehaving.
47The Book
Tom Thomas is not excited at all when he receives the book "Treasure Island" as a gift from his grandmother. He thinks reading is boring. But Simka slowly manages to get Tom Thomas and Nolik wrapped up in the story.
48The Headphones
Tom Thomas recruits Nolik to try and help him pass his spelling test with a sneaky plan: Nolik will tell him the answers through his wireless headphones. But things don't go as planned when Nolik has trouble communicating clearly.
49Charging
Basiya teases Grandpus and brags that she has far more energy than him because of her exercise regime. Grandpus takes this as a challenge and the two have an exercise competition.
50The Computer
Papus and Nolik see Tom Thomas's Dad asking someone inside his new computer for help and they are convinced that one of their family members must be in the device. What they don't know is that Dad is getting help through the Internet.
51The Recording
The Fixies are about to have a talent show and Nolik convinces Digit to sing a song for it. Discovering that Digit is a terrible singer, Nolik suggests that he lip-sync to a recording.
52The Battle