The story of young teenagers and pupils on Hartvig Nissens upper secondary school in Oslo, and their troubles, scandals and everyday life. Each season is told from a different person's point of view.
Eva is in her first year at school and has fallen out with her old friends Ingrid and Sara. She only knows her boyfriend Jonas and his friend Isak at school. She is convinced to go to a school party where she meets several new people.
During the fall holiday, Eva, Jonas, and Isak go on a cabin trip. Eva is annoyed because her boyfriend invited Isak along. The tension between them rises when she suspects Jonas is keeping secrets.
Back at school Eva befriends Noora in her Spanish class. They and Sana are invited by Vilde and Chris to join them in getting a bus for the graduation celebration when they start russ in three years.
Sana and Vilde want Eva to get in touch with Christoffer from third year, in the hopes they will be invited to a party with the third year boys, among them the most popular boy in school William.
Eva invites Jonas for dinner to meet her mom. Vilde is falling for William, and the girls visits the school doctor to get contraceptives because Vilde has decided she wants to lose her virginity.
Eva suspects that Jonas is cheating on her with her former friend Ingrid, and meets Isak to talk about it. Vilde reveals details about her and William. The girls go to a Halloween party Christoffer invited them to.
After kissing Christoffer on Halloween Eva feels guilty, and asks Isak for counsel. Noora wants Vilde to stand up for herself and stop caring for William after he started ignoring her for other girls.
Everyone knows about what happened on Halloween, and the entire school is gossiping about Eva. Jonas won't talk to her and on top of things Vilde finds out about her past. William starts to show interest for Noora.
Eva gets a threatening letter, and Vilde decides to leave the bus crew. Eva is thinking about changing to another school, while trying to find out who wrote the letter.
The girls start to get worried something is wrong with Vilde. Eva talks with Jonas after not talking for a long time. The girls go to a Christmas party, and Eva decides to confront Isak.
Vilde reveals that she thinks she may be pregnant. William continues to flirt with Noora. Isak and Eva talk things out, and Eva decides to have a heart-to-heart conversation with Jonas.