(Happy News): Nikolce learns he is going to the school excursion with his classmates. He is excited and nervous, but also worried about his parents' financial situation. He tries to help them by selling newspapers and doing chores.
(Room Number 7): The students arrive at the hostel where they will stay. Nikolce meets Simona, a girl from another school who catches his eye. He also makes friends with Koce, a mischievous boy who likes to play pranks on others.
(Margarita): Nikolce falls in love with Margarita. He tries to impress her by writing her poems and giving her flowers. However, he faces competition from Branko, a rich and arrogant boy who also likes Margarita.
(A Stick for the Thief): Nikolce and his friends discover that someone has been stealing their belongings from their rooms. They decide to catch the thief by setting up a trap. They also have fun exploring the nearby forest and lake.
(A Lesson for Non-Swimmers): Nikolce admits that he doesn't know how to swim and asks Simona to teach him. She agrees. Meanwhile, Koce and his friends plan a prank on the hostel manager, who is very strict and mean.
(A Note in the Heart): The last day of the excursion arrives and Nikolce has to make a choice between Margarita and Simona. He writes a note to the girl he loves and puts it in her backpack. However, things don't go as planned.