The Fixies

When Nolik offers to help Katya fix her broken electric piano, he discovers that there are two Fixies living in Katya's apartment, Tweak and Geek . Nolik convinces the twins that it is safe to reveal themselves to Katya.

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 in Tom Thomas' apartment and meets the twins for the first time.

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.

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' 3D printer.

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.

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.

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.

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.

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.

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 have different opinions about what parents really like and set up a series of competitions to see.

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.

Nolik is unprepared for his upcoming test at Fixie School and so Tom Thomas loans him his lucky eraser as a good luck charm.

Katya is upset with Tom Thomas for being unthankful for all of the help she has been giving him. Saying he could have done all of these things himself, Tom Thomas is soon put to the test when he needs to try and sew on a button for the first time.

When Geek gets his head stuck inside a pencil eraser he climbs on the back of Tweak to carry him to Basiya for help.

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.

After learning that Digit got time off of school for making an invention, Freak and Tweak claim to invent a perpetual motion machine so they can get time off as well. Digit thinks it can't be real, but is unable to figure out how they might be faking it.

Wanting to get their own pack-o-mats, Grandpus devises a test for Tweak and Geek to construct a miniature power plant. The winner will get the one pack-o-mat he has available.

When Tweak and Geek learn that Professor Eugenius has not congratulated Elisa on her PhD, they order flowers online, unaware of the money they are charging to the Professor's credit card.

When Nolik wishes Fixies had Santa Claus like humans do, Basiya and Grandpus plan to surprise him. But things get confusing when both Basiya and Grandpus arrive dressed up like Santa.

After agreeing to help Professor Eugenius test out his x-ray machine, Elisa is frightened when the x-ray of her hand seems to show gears inside. How could she know that the gears are just Tweak and Geek trying to take x-rays of themselves?

Tom Thomas is frustrated he missed getting a picture of a bird with his smartphone because he had to take off his gloves. Simka helps him make a pair of gloves that will work on a touch screen.

After having a lesson on energy conservation at Fixie School, Nolik tells Simka, Freak, and Tweak he can't do his chores today because he needs to save energy.

Nolik thinks everyone has forgotten his birthday. To make matters worse they all seem to be making fun of unfortunate mistakes he made in the past. Could everyone really have forgotten Nolik's special day?

When Tom Thomas plays an April Fool's trick on Katya she gets the hiccups. Nolik and Simka try to help her get rid of them.