Mariia visits her childhood home and reminisces about the summer of 1986, when a girl named Mimi arrived in the small village and filled the life of the then 15-year-old Mariia with light.
16-year-old Eveliina accidentally sees her mother kissing another woman. Fearing her parents' divorce, she decides to intervene, by any means and without permission. In her opinion, the best way to destroy her mother's extramarital affair and bring her parents back together is a teenage daughter in trouble. Thus, Eveliina gets herself in trouble as many ways as she can. Along the way, the lives of a few others are at stake. Still, Eveliina guards her plan to the last, and the adults have their own secret ways of survival - until the bubble bursts.
Jaakko, a mushroom entrepreneur, finds out too late that he has been fatally slow-poisoned by persons unknown. He sets out to find the culprits before he dies.