Everyone is happy to start the new school year with the famous wonder waffles from the Freytag sisters. But when Flora posts a funny video of the action on the Internet, her sister Finja of all people becomes the victim of hateful comments. This bad start comes about: According to Einstein's rules, couples have to sleep in separate rooms, including Leni and her friend Cäcilia. Unaffected by all this, newcomer Bela lets it rip, musically ...

Ex-Einsteiner Pia Pigalke appears at the Einstein to head the new Internet & Security module. The strange thing about it: The teachers don't know anything, and Finja as a victim of bullying is not allowed to participate. Meanwhile, Hermann is wondering what Jonah is planning, and of all people, Gustav, his new roommate, seems to know the answer.

Reena messes with Ms. Pigalke: She does not find their methods correct. Even outside of the small group of chosen ones who are allowed to participate, the module causes annoyance: Why are they allowed and we are not? Sibel not only has to deal with the fact that the border runs exactly between her and Pawel, as a mentor she also has to take care of Joyce.

The selected modules do not make all Einsteiners happy: Hermann has to share a herb with Gustav, of all people, Anton tries his luck in the sprint relay because of his father, and Rosa would so much like to be an insider on Ms. Pigalke's module.

The endeavors of some Einsteiners have a different outcome than expected: Reena goes far too far in the Internet & Security module and thus causes trouble, Badu cannot assert himself as a relay trainer for one day, and the day Rosa and Anton spend together ends differently than expected.

The forest days are not going as planned. Ms. Stocker and Chiara miss the bus and have to follow them by taxi, and Sibel and Pawel never come back from collecting wood. Rosa, Viktor and Bela go into hiding at the boarding school.

Hermann, Gustav and Chiara are stuck together: quarantine after an unexplained rash. In the Internet & Security module, Ms. Pigalke lets Moritz and Flora compete in the digital election campaign for the office of head boy. Meanwhile, Mr. Hauser tries to find his way around in the unfamiliar role of a father.

Finja and Paul are tracking down a strange symbol. You are on the right track, but you haven't made it to your destination yet. Reena works as Flora's campaign manager. The guns it brings out force Moritz to detonate the next stage. Rosa loses interest in speed skating and now has to decide on a new focus.