Antti begins his first day of junior high school and becomes interested of his new classmate Jaana.

The boys and the girls have their first physical education class. On the boys side the game isn't fair and on the girls side the exercise is too tiresome.

The boys discuss, what crazy scenarios might be happening behind the closed doors of the teacher's common-room.

Because the students dislike the school canteen's lunch, they decide to sneak into a nearby store during the recess.

Antti goes through a series of events which demonstrate how the social media affects him and his friends everyday life.

Kalle tries to comfort Antti, who is being overwhelmed by a huge, talking zit that has conquered his face overnight.

During health education class, it turns out the dating lives of the students rarely go "by the book".

Antti and Jaana become closer as they spend a day together in the great outdoors.

Antti hasn't prepared for the math exam, and needs to find another means to pass the test.

The principal and the teachers are faced by a seemingly insurmountable task of getting a printer to work.

Antti has to deal with the conflicting commandments from the despots at home, his parents.

The girls trick the boys to believe an urban legend, according to which their testicles are being shrunk by a soda drink.

A hurtful gossip about Antti and Jaana is taking over the school.

The school gets a brand new ping-pong table to encourage the students into healthy and spirit-strengthening activity.

A health brochure from the nurse gets some students insecure about their weight.

Antti, Kalle and Keijo have differing recollections of their first day of elementary school and the beginning of their friendship.

When Jaana requests Antti's school picture for her friend journal, Antti tries to improve his looks for the photo.

Keijo wants to become a rich and famous YouTuber but has to face some resistance from his peer group.

A new fad, sticking a tongue to a frozen iron pole spreads among students, while the teachers need to find a way to prevent the injurious trend.

Keijo wants to improve his grades right before holidays, driven by his mom's promise of rewarding him with a new video game. Meanwhile, the teachers are struggling with a whole new grading system.

When parents force Antti to get some fresh air, he finds out that a loitering teenager isn't welcome pretty much anywhere.

Antti's new year's home party for his friends gets out of hand.

Kalle the student becomes the teacher, when the school staff is having a hard time learning mandatory new technology.

While Antti is trapped at the school cafeteria for a mandatory work experience day, he feels envious for Kalle and Jaana having a good time together at class.

There is a police car on the school yard, Antti's conscience and imagination goes crazy. Also Keijo comes in contact with his conscience.

Valentine's days dance's partners have been distributed blindly, and some people are not happy about that.

Keijo starts a new hobby. Keijo and Jani challenge each other within their hobbies, but what happens when a fair sports spirit is lacking and who pays the bills?

Jaana has invited people to a sleepover, but who? Friendships start shattering,

Sakke and Tumppu rebel against the school's outdated rules and go trough every loophole possible.

Ten thousand followers and a influencer deal, but by what means? The school's influencer panel encourages you to use your voice in social media and absorb influences from influencers.

A mysterious person has returned to disturb the school's peace. Does the school hold a big secret or is the truth more interesting than the myth?

Antti is not feeling very good and avoids going to school. Jaana also has a crisis and Elli's patience is about to break. Can friendships be restored anymore?

Jaana is worried about an intimate picture that she had sent while still in a relationship. Antti hurries to help which causes for the picture to start spreading among students. Who ends up blackmailing and who?

Is Keijo a misunderstood latent talent, or a fool who needs to start teking responsibility for himself? Keijo ponders changing classes while choosing optional subjects bring the other's problems.

The Operation Day's Work arranged at school rises competition. Antti tries to please Jaana which causes for others to suffer. Whose beat everyone dances?

Kaapo has coded ToveriTutka application to help finding new friends. However, not all are not happy with the app, and creating new bonds doesn't go flawlessly.

Antti is troubled about a folder that doesn't belong to him. In the process of trying to get rid of it, he winds up in a life-threatening situation. Antti is awoken into the finitude of life, and peer pressure is driving Jaana towards a fateful choise.

Kalle wishes for his parents to be more open. There's written and unwritten rules - with no tolerance for breaking either.

Antti's little sister aino needs a babysitter for the evening. Kalle wants to tell his friends something important, but to get there Antti needs to make a choise between friendship, family and his crush.

The spring's last assigment is as follows: "Write yourself a letter into the future". What do Antti, Kalle and Keijo and their friends write? There's no way to return to the past, atleast not completely...