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.
Johanna, the hostess of the parish house, does her utmost to ensure that everything goes according to plan. There is no room for error. The last thing Johanna needs is a busload of uninvited guests knocking on the door of the parish house on the eve of an important wedding. However, a passing Russian party has had its car broken down and Johanna soon finds herself accommodating the party at the parish house. Johanna's brother is tasked with fixing the car to get the guests on the road and out of the way quickly. Her brother's entrepreneurial friend, on the other hand, sees great opportunities in the situation and decides to act. The clock ticks, the car won't start, the wedding ceremony is about to begin and the recipe for disaster is in motion.
Iiris tries to recover from her difficult separation with Artturi when she unexpectedly meets Anton. The relationship doesn't get a chance to progress far when Iiris' son Niilo suddenly becomes ill. Niilo would only need a small operation, but once the boy enters the operating room, the hospital is subjected to a cyber attack. The power is cut off, the ventilators stop working and all access to patient data is blocked. Nurses have to prioritize whose life is the most valuable.