Hanna is an ordinary teenager who had her friendship circle broken and now can count on only her boyfriend and their best friend, Matteo. However, everything is about to change when she meets some girls.

Hanna, Jonas and Matteo are going on a trip to Heidesee.

Hanna joins the organization team for the Heldenparty.

The girl-crew start planing for the Heldenparty and get invited to join Samuel in his new music video.

Hanna finally decides to tell her dad about Jonas. Meanwhile the girls are helping Kiki to get contraceptive for her upcoming night with Alexander.

Jonas and Hanna get into a fight and Hanna starts suspecting, that Jonas might be cheating on her. But then at Finns party things take a turn.

Hanna has to deal with the events of last weeks party, while Kiki tries to figure out why Alex hasn't talked to her since their one-nightstand.

Hanna wants to make things right between her and Jonas, Kiki reveals an old secret of Hanna and on top of that she receives a mysterious threat letter.

The girls are having a karaoke night, where Kiki is acting strange and Hanna is trying to confront Matteo, who than reveals something she didn't expect.

Jonas and Hanna have a final talk and Kiki and Mia visit the doctor, before everyone meets up for the big Heldenparty, which holds many surprises.

8 Months after the Heldenparty Kiki is in a relationship with Alex, but is that really healthy for her? Mia feels the need of helping her figure that out.

It's Christmas and Mia has nobody to celebrate with. And on top of that Alex keeps reminding her constantly that she promised to go on a date with him. After he encourages Kiki to get a breast surgery, Mia makes a decision.

The girls go on a trip to a cabin to celebrate New Year's Eve, which holds a big surprise for Kiki that leads to a surprise for Carlos on his 18th birthday party.

Alex joins the Abimotto group and offers to host the meeting on Friday. Mia also attends the meeting, but gets locked out of her apartment, so she has to stay at Alex's place for the night.

The first Abi-prank happened in school, which lead to damage at a copier. So they throw a party to be able to pay for a new one. At the party it comes to the final argument between Mia and Alex, which defines their future.

Alex and Mia try to hide what happened at the party, but slowly everyone is finding out, so Mia decides to tell Kiki the truth.

Mia decides to not keep her promise to Kiki and is still seeing Alex. Meanwhile Alex has to deal with his past.

Everything seems fine, but then Alex snaps when he sees Björn and beats him up. Mia is completely in shock and Alex suddenly seems like a stranger to her.

Mia doesn't know if she still loves Alex and decides to ask Björn about their past. But suddenly she finds herself in more danger than she thought.

Alex finally opens up about his past to Mia but then breaks up with her and plans on going to London after the Abi. While the girls celebrate Sams's 18th birthday, Mia meets Alex to have a final conversation.

Matteo moves in with Mia, Linn and Hans. After a stupid move Matteos weed ends up in Amiras bag and in order to get it back he has to attend the Abi-prank group, where he meets somebody special.

Matteo plans on taking the next step with Sara, but when he accidentally meets David on that day, he offsets Sara and spends the day with David.

Matteo struggles with his sexuality, which leads to a panic attack at his party, where he also meets David in accompaniment with a girl.

Matteo and Sara are preparing a party for Abdi, when suddenly David and Leonie join them. After Matteo and Sara had an argument, David and Matteo leave to a abandoned swimming pool.

Matteo and David are enjoying their time together, which leads to Matteo breaking up with Sara, but then on Friday Matteo gets into a fight with Hans, and on top of that he also gets a text message from David.

Matteo is really hurt and starts pushing people away. After a therapy session with his dealer he decides that it's time to talk to Jonas about his feelings.

Matteo starts to apologize to the people he hurt. He then is encouraged to make David decide whether he wants to be with him, which turns out differently than he imagined.

David decides to share a big secret about him with Matteo, which makes Matteo question their relationship for a brief second, but than someone else finds out about David's secret and things take a turn.

The whole crew stands behind David after his outing and wants to help Matteo, but Matteo has to deal with David running away from home, so he has to admit something about his feelings for him.

David and Matteo are finally reunited and happy, David is able to retake his PE exam and at the end of the week the Abi-prank takes place.