Tim and Erik haven't studied. Cheating might be an option, but it requires some effort. Erik needs to poop. Frederique is stressed because her rabbit was taken away.

Is Erik's flirting with Ms. Spek mutual? How does Viktor handle the new student, Lars? Can Tim finish Armani's homework in time and make it to his appointment with Marietje? In any case, math teacher Barteljaap gets destroyed.

Tim, Erik, and Tim's blue balls have to do a task for Hulst. This increases tensions between Tim and Marietje, who is also about to explode. Mr. Boom tries to explain to Viktor that Lars is not a monkey. Barteljaap reminisces about his youth, where he was also destroyed, of course.

Parent-teacher night, not fun for anyone. Tim and Erik need to come up with something so their parents don't find out about their bad grades. Lars' parents visit Viktor, and for Barteljaap, there's finally a tiny glimmer of light at the end of that long, pitch-dark tunnel.

The long and tough week is nearly over. Tim did abominably on the English test. Erik has a great plan for surviving the rest of the year, but can, may, and should Tim go along with it? Has Viktor learned anything this week? Can Barteljaap be destroyed even more?

This year, repeating the grade is a top priority for Tim and Erik, so when they have to help janitor Tony, they want to get it over with quickly. When it turns out to be Tony's birthday, things take a different turn.

The school is under the spell of witchcraft. The new religion teacher starts an inquisition, and Mr. Hulst takes his first steps as a wizard. It's up to Tim and Erik to keep a cool head.

Now that Tim can't have Marietje, he wants to live a sexless life. Unfortunately, hormones are flying around, and he's tested from all sides. Meanwhile, Erik tries to seduce Roslin.

Tim and Erik wake up in Barteljaap's classroom. It's evening, the school is deserted, and the classroom door is locked. Sounds like the start of a horror episode.

Tim and Erik play the legendary football tournament against Hulst's team, but Heydrich hasn't divided the teams entirely fairly.

It's the end of the year, and the final exam prank is coming up. Tim and Erik have big plans, but then Erik's sudden maturity throws a wrench in the works. Barteljaap is still a king.

Final exams are in full swing, but the quarrel between Tim and Erik endangers the school's delicate ecosystem. It's up to Mr. Hulst and the students to restore balance.

The big end-of-year party has arrived. Barteljaap is nervous, he's never been to a party before, but Tim and Erik reassure him. Barteljaap is a boss, so what could possibly go wrong?

The school year has truly ended, and the school is shaken by recent events. Everyone says goodbye, but for Tim and Erik, it all starts again after the holidays.