Einstein is upside down. Because the merger with the unloved sports boarding school is a done deal - it only helps to close your eyes and through! Martha & Co. promise Director Chung to behave. It quickly turns out that it won't be that easy. The cool athlete gang around Till, Nick and Timo welcomes the Einsteiners with little joy.

The arrival at the new boarding school is complete. But nothing more. The athletes don't even see a share of their boarding school. Prima ballerina Caro in particular is annoyed when everyone wants to take over her ballet hall. New rules also apply in school. Einsteiner and athletes should work together, but both sides only want one thing: get rid of the others!

Martha arms herself with hard guns, because she doesn't want the athletes to dance around her nose. You live here now too. But are all Einsteiners on your side?

Casimir is finally coming back. Martha is full of anticipation and wants to plan a surprise for her boyfriend with Nele. Girl stuff isn't for Martha at all, is it?

Einsteiner or athlete? There is no in between, think both Nele and Nick and heat up the atmosphere. But is every student really only on one side when the other seems much more exciting?

A new learning module starts at school with the project day gravity. Nele goes to great lengths while the teachers enjoy their team day to an unimaginable amount. Everything seems fine - until the next morning when the most important things about Einstein are missing.

Einstein is very excited. There has not been something like that before. Was it a brazen theft or an accident? Einsteiner and athletes blame each other. Director Stocker and Director Chung face a tough decision. At the same time, Caro is also struggling with a decision regarding her upcoming ballet exam. Einsteiner or athlete? There is no in between, think both Martha and Till and heat up the mood. But is every student really only on one side when the other seems much more exciting?

Athlete Nick and his mentor Kasimir are faced with a difficult task. Together they should master their physics lecture. A team of athletes and Einsteiners, can that go well? There is also tension in the girls' room. Olivia and prima ballerina Caro are looking forward to their important exam.

Who is responsible for all the mess? Everyone is wondering that. Each party looks to the other to blame. Rike, Hermann and Moritz finally want to bring peace to the Einstein again and forge a plan.

Martha is planning a big coup and prank queen Jona really wants to be there. You can't do that from home. But how is she supposed to convince her dad to move to boarding school right now?

Showdown between TNT boss Till and Martha: is peace finally coming back to boarding school? The rest of the students are slowly getting too stupid. After all, there are more important things in life: an unexpected letter for Olivia doesn't just make Rosa curious.

You have to celebrate the festivals as they come, says Rosa and wants to get Einsteiner and athletes to agree to a ceasefire. The little optimist does not allow any arguing and prepares Einstein for the party of the year.

What happened? Why was the ambulance at the school when the students arrived in the morning? Nobody knows. Really none? The directors anxiously await news from Dr. Ruhland (guest role Gunda Ebert).

After the blatant incident, athletes and Einsteiners get together and prepare a surprise. Ms. Stocker and Mr. Chung also hope that everything will be fine now. But school councilor Dr. Berger has his own plans and completely upset the positive mood.

Cäcilia is supposed to prove what she can do on her career and a dream comes true for Martha and Till. The schools will be separated again! The other students are shocked. How did they let it get this far?

While Rike and Rosa are feverishly looking for a solution to the whole mess, Cäcilia and Sibel have completely different problems. And Pavel is sitting between the chairs.

Nele and Martha are actually best friends. Actually! They don't understand each other anymore. Schiller and Hauser show their students new methods of dealing with differences of opinion.

It's a done deal, Einstein must be saved! But how can you plan an exciting and at the same time convincing campaign around school board member Dr. To dissuade Berger from separating schools?

While she makes every effort to stamp the joint project out of the ground, the otherwise so level-headed Nele has to take care of her misstep. She screwed up a lot and Till went one better. Unexpected help rushes out.

There are no impossible missions for the dream team Hermann and Jona. With the support of Pit, they create the best conditions for the secret action Save the School.

The students give everything to convince their teachers. But are they really all pulling together? How do Mr. Chung and Ms. Stocker react, can they respond to the wishes of the students?

Not only the directors, but also Dr. Berger is a tough guy. A really good plan is needed. In addition, the Central German Championships are in the individual run and everyone is betting on Viktor. Can he live up to these high expectations?

Preparations for Plan C are in full swing. What exactly Einsteiner and the athlete plan together remains a secret, until suddenly everything has to go very quickly.

After all the mess, Pit has a surprise. But will he really be happy about it?

Everyone - athletes and Einsteiners - prove that they belong together. Nobody is lost! True to the motto: One for all and all for Einstein!