It's a seemingly normal day at Kivikoulu until the students realize that their favorite teacher, Mrs. Aalto, is missing. The students are puzzled and concerned, and they decide to investigate her sudden disappearance.
While searching for clues, the students stumble upon a mysterious clue in the liikuntavälinevarasto. They find an old journal belonging to Mrs. Aalto, which contains cryptic messages and a map leading to an unknown location.
During their investigation, a false palohälytys disrupts the school, causing chaos and confusion. Amidst the commotion, the students uncover a hidden message that provides a crucial piece of the puzzle related to Mrs. Aalto's disappearance.
Armed with the new clue, the students embark on an adventurous journey to follow the map and decode the cryptic messages. Along the way, they encounter unexpected challenges and work together to unravel the mystery of the missing teacher.
When a beloved teacher goes missing from Kivikoulu, the students must unravel the mystery of her disappearance. With the help of an unexpected clue from the liikuntavälinevarasto and a false palohälytys, the students embark on a thrilling adventure to solve the puzzle.