The school year starts with lots of kitchen utensils and a rescue mission for Nesrin, Annika and Marlon, while Noah is happy to be back at boarding school.

Maxi will do anything to get to Einstein. Massuda is looking for help to get better grades, and Tahmina isn't making any new friends for the time being.

Colin makes a decision that Joel doesn't like. While Nesrin and Annika plan their joint modules, Reena finds herself helpless in the school garden.

Noah doesn't allow any feelings and Leon feels let down by Io. Karl, who simply can't score with Maxi, also feels left behind.

While Karl makes Zech's class laugh, Annika searches for her "artistic self". Noah messes up a presentation with Ava.

Elly plans an impromptu birthday party for Joshua. Leon doesn't feel like celebrating, he is plagued by longing, and Tahmina tries to keep a promise.

A boring afternoon of games for Nesrin and Annika ends in a cool boarding school party, and without Massuda! Mr. Zech founds a new book club.

Ava is given a sporting challenge by Noah and Karl is persuaded to lie by Maxi. Tahmina is faced with a choice: either school or the NeXpress.

Ava is struggling with a sports project at Mr. Hauser's, Elly with jealousy and Maxi with anger. Thanks to Joshua, her grandma's treasure is no longer a secret.

Marlon has a crush and Joel tries to turn Noah and Ava into a team with very individual ideas. The Share Space is on the brink of financial collapse.

Maxi and Karl end up in a wrestling ring in search of the second piece of the treasure hunt. Io returns to the Einstein. Massuda performs well in the history test.

Leon is about to say goodbye and Chiara is stunned by a bed full of horse manure. Tahmina and her aunt Emilia have a heated argument.

Marlon helps Nesrin to recognize her feelings and Chiara confronts Elly. She wants to spend more time with Massuda and has a plan.

A visit from a contemporary witness also brings new details about the treasure hunt. Charlotte struggles with her fear of public speaking and Simon disappoints Leon.

Einstein's school trip goes to the Stasi records archive. Ms. Miesbach deals with the topic of GDR flight and Ava works on a presentation about sports.

Tahmina is on the trail of the next part of the treasure map and Massuda gives everything for good grades. Elly feels superior to her brother for the first time.

Ava and her brother Patrick are the perfect dance team. Another piece of the treasure hunt is discovered, and Nesrin explores her feelings.