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Season guide

Klassen: Season 18

48 episodes Premiered Jan 7, 2025 Updated Sep 28, 2026
Previously on Klassen

Season 18 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Klassen Season 17.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 18 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 18 Progress Shield

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Binge Efficiency Engine

Season 18: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

27%
73%
Mytharc (13): Crucial lore & season climaxes
Core (35): Character development & subplots
Side Quest (0): Standalone / filler
S18·E1 Mytharc

My new class? (Part 2)

Jan 7, 2025 · 10 min

Mathilde is furious with Caroline after discovering she's not on Caroline's wish list for the new classes. Their enmity extends to Gertrude, and it's now even more exciting to find

S18·E2 Mytharc

My new class? (Part 3)

Jan 8, 2025 · 9 min

The new classes are announced and everyone is happy - except Cornelius, who is suddenly without his girlfriend, Caroline. Can their relationship survive being torn apart, or will C

S18·E3 Core

Just dance, Musa!

Jan 14, 2025 · 9 min

Musa is fascinated by Esme, who is a great dancer, and wants to be as good as her. But Erik warns him that dancing with a girl is the same as going on a date with her. Or is it?

S18·E4 Core

The anthem of support

Jan 15, 2025 · 8 min

Luna feels sad when she sees videos about children in need on TikTok. She realizes she has to do something to help, and together with Baldur and Mads she comes up with the idea to

S18·E5 Core

A new friend?

Jan 21, 2025 · 10 min

Johannes is still down about Tue making other friends in class and seeks solace in the cave they made together. But it turns out he's not the only one seeking shelter there. Maybe

S18·E6 Core

A dramatic reading lesson

Jan 22, 2025 · 9 min

It's reading class and Sif and Cornelius are tired of being in a group with Mads and Zoe, who constantly interrupt them because they're bored. But maybe reading class isn't so bad

S18·E7 Mytharc

Caves & Dragons (Part 3)

Jan 28, 2025 · 12 min

Sif and the rest of the gang have decided to stop playing G&D because they are tired of their classmates' comments. The message angers Club Ras, who kills their characters. The gro

S18·E8 Core

Caves & Dragons (Part 4)

Jan 29, 2025 · 9 min

Tue has decided to ask Sif if they should hang out together one day after school. He doesn't have the courage to do it himself, but thinks his character, Leopold, can help him?

S18·E9 Core

The class stink!

Feb 4, 2025 · 9 min

Zoe is now the only one who showers after PE and she's getting sick of it because the class stinks! What can she do to change the others' minds? And what does a smoked mackerel hav

S18·E10 Core

Awkward sex education

Feb 5, 2025 · 13 min

Kian will do anything to avoid sex education with Gry because he finds it too awkward. Luckily, the technique fails and Kian sees it as an opportunity to escape. But he doesn't let

S18·E11 Core

Help - I'm going on a date!

Feb 11, 2025 · 9 min

After the last game of Caves and Dragons, Sif agreed to go on a date with Tue, and now the day has come. But Tue is super nervous, because how do you even go on a date? And has he

S18·E12 Core

Who is dating my sister?

Feb 12, 2025 · 9 min

When Johannes finds out that someone is trying to pick up his stepsister, Sif, he asks Tue for help. But why is Tue afraid to admit that it's really all about him?

S18·E13 Mytharc

Superfan of Ida (part 1)

Feb 18, 2025 · 13 min

Sofie is a huge fan of singer Ida, so when she discovers that Ida is offering a visit to the class that sends in the best video, she goes all in to win the competition. But what do

S18·E14 Mytharc

Superfan of Ida (part 2)

Feb 19, 2025 · 12 min

Thanks to Musa, the class has won a visit with superstar Ida. Sofie is her biggest fan and freaks out when Ida asks her for help. But maybe it's actually Ida who can help Sofie.

S18·E15 Core

Skincare fail

Feb 25, 2025 · 11 min

Emma looks up to Kat's older sister, who makes beauty videos on TikTok, and will do anything to look like her. So when she gets the chance to try her skincare products, she's thril

S18·E16 Core

Is ChatGPT cheating?

Feb 26, 2025 · 10 min

Thas and Sofie don't understand why everyone is asking Olly for advice when they need to find new book recommendations at the library. It turns out that Olly is using ChatGPT, but

S18·E17 Core

Flirt or cousin?

Mar 4, 2025 · 9 min

Valdemar is Gertrud's cousin, but when Caro and Mathilde think they're dating, she lies and says yes because she feels more comfortable now that she has a boyfriend. But how does G

S18·E18 Core

Drama for baking competition

Mar 5, 2025 · 8 min

When Patrick gets bored in food class, he tries to create drama between students. However, it quickly backfires when he is found out and ends up paying the price for spreading fals

S18·E19 Core

Is Caro breaking up with you?

Mar 11, 2025 · 10 min

Caro has decided to break up with Cornelius, but wants to do it in a way that won't upset him. Is there even a good way to break up?

S18·E20 Core

S.I.S.T.E.R.S.

Mar 12, 2025 · 12 min

The school's patrol is the toughest in town and goes by the name S.I.S.T.E.R.S. They are put to a real test when they have to rescue a ball from the school neighbor, the evil Miss

S18·E21 Core

Sensitive guy

Mar 18, 2025 · 11 min

Cornelius is down after his breakup with Caroline, but doesn't dare show it to the other boys. He's afraid of being teased for being sensitive. But maybe he's not the only one?

S18·E22 Core

Standing up all day

Mar 19, 2025 · 10 min

Niels has found that standing up is much healthier than sitting down and doing work. Zoe, Musa and Jennifer see it as an opportunity to challenge him to stand all day.

S18·E23 Mytharc

The school's creepy neighbor (part 1)

Mar 25, 2025 · 10 min

The school's neighbor, Miss Von Heckelschmerz, is furious when Niels, Musa, Zoe and Nadia play loud music at school. But what does a stolen dog and a secret past have to do with it

S18·E24 Mytharc

The school's creepy neighbor (part 2)

Mar 26, 2025 · 12 min

Niels, Musa, Zoe and Nadia are still in trouble with Miss Von Heckelschmerz. But it turns out that Zoe might be a lot closer to her neighbor than she thought. Maybe the neighbor dr

S18·E25 Core

Kian tastes his own medicine

Apr 1, 2025 · 10 min

Kian pressures Olly to set the class clock forward so they can have recess early. Unfortunately, Olly is busted by Patrick and Kian leaves him to take the blame. But is there reall

S18·E26 Core

Why is Sofie lying?

Apr 2, 2025 · 11 min

Sofie loves committees and gets angry when she's not allowed to join Baldur, Nadia and Esme's culture committee. Sofie pretends to be Swedish so she can join, but ends up letting h

S18·E27 Mytharc

The big threats (part 1)

Apr 8, 2025 · 9 min

Someone has peed in Niels' bag and the accusation quickly falls on Hassan and Olivia, two creepy 9th graders. But what does Cornelius have to do with it all?

S18·E28 Mytharc

The big threats (part 2)

Apr 9, 2025 · 12 min

Cornelius admits to helping Hassan and Olivia after they blackmailed him with deepfake nudes. Now Niels will do anything to help Cornelius out of his predicament.

S18·E29 Core

What is Zoe hiding?

Apr 22, 2025 · 10 min

The class is back from spring break and Gertrud and Nadia are excited to tell Zoe that they have traveled climate-friendly during the holiday as agreed. But can Zoe live up to her

S18·E30 Core

Who is crushing on Emma?

Apr 23, 2025 · 10 min

Erik is convinced that Lukas has a crush on Emma, although Lukas doesn't agree. But maybe it's all about Erik having a crush of his own that he's afraid to admit?

S18·E31 Core

Best actor in the class

Apr 29, 2025 · 9 min

It's Sif's first day in theater club, and today they're playing a werewolf. Baldur and Luna compete to be the best actor in the class, but maybe it turns out to be someone else ent

S18·E32 Core

Am I normal?

Apr 30, 2025 · 9 min

The class is going for their annual check-up with the health visitor, where everyone finds out if they are on track. Thas has grown a lot during the year and fears she is "overweig

S18·E33 Mytharc

Camp trip (Part 1)

May 6, 2025 · 12 min

The class has gone on a camp trip and everyone is excited - except for Johannes, who is afraid of the dark and sleeping in a tent, especially now that his best friend, Tue, has fou

S18·E34 Mytharc

Camp trip (Part 2)

May 7, 2025 · 10 min

The rumor that Sif and Tue are dating has spread and Sif gets angry with Tue for telling. But why do they have to be secret lovers?

S18·E35 Core

Jennifer's lonely mother

May 13, 2025 · 9 min

Jennifer worries about her mom, who seems lonely after her parents' divorce. So she skips a great concert and lies to Esme. But maybe Jennifer's concern is misguided?

S18·E36 Core

Confirmation or not?

May 14, 2025 · 8 min

The class is talking about confirmation and Baldur is in turmoil. Does he even want to be confirmed? And how do you know what you believe in?

S18·E37 Core

Who is Cornelius dating?

May 20, 2025 · 9 min

Mathilde discovers that Cornelius and Bjørk are dating. She does everything she can to prevent Caro from finding out that Cornelius has moved on. But is Mathilde too overprotective

S18·E38 Core

No more screen

May 21, 2025 · 8 min

Esme is not allowed on social media and looks over Jennifer's shoulder as she has no screen rules. But when they see something creepy on TikTok, the girls have second thoughts. May

S18·E39 Core

The smashed guitar

May 27, 2025 · 8 min

An investigation begins at school when the guitar from the music room is suddenly smashed to pieces. Three members of the class were in music class at the time of the crime - but w

S18·E40 Core

The pencil theories

May 28, 2025 · 10 min

Mads has no energy today, which is why he has a crisis when he ends up in a group with Niels and Musa, who are completely hyper. How does it end up being 5 pencils that save Mads'

S18·E41 Core

Ghosted for gaming

Jun 3, 2025 · 10 min

Erik wants to join Lukas and David's gaming clan - but he's not good enough, so the boys tell him a lie that goes very, very wrong.

S18·E42 Core

Rat snack challenge

Jun 4, 2025 · 10 min

Niels has found a new trend on YouTube that he's sure will make him and Musa big on YouTube. Unfortunately, Niels ends up overstepping his own boundaries in the pursuit of success.

S18·E43 Core

What have I done?

Jun 10, 2025 · 9 min

When Kian arrives at school, he feels like Olly is giving him the cold shoulder. But why is Olly so angry? What has Kian done?

S18·E44 Core

Poor excuse

Jun 11, 2025 · 7 min

Nadia is feeling stressed and looking forward to a quiet evening with her family. However, she realizes that she forgot an appointment with Zoe and Gertrud and lies about why she c

S18·E45 Core

Dreams for the future

Jun 17, 2025 · 8 min

The class is making dream booklets in art class and Thas and Luna approach the task very differently. Is there a right and a wrong way to dream about your future?

S18·E46 Core

An ugly dress rehearsal

Jun 18, 2025 · 12 min

The class arrives at the rehearsal with their own sketches, which together will make up their final show. But things quickly fall apart when everyone is offended by each other's te

S18·E47 Mytharc

A terrible start to school

Jun 24, 2025 · 7 min

Luna has nightmares about the first day of school in her new class where everyone hates her. But why is Luna so nervous?

S18·E48 Mytharc

The big premiere

Jun 25, 2025 · 10 min

The class gets nervous before the show starts when they realize that the new students are in the audience. Suddenly it becomes important that everything is perfect, but maybe the l

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