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.

Everything is on track in the life of the beloved but eccentric surgeon Petteri Holopainen but when a patient close to him is rushed to the hospital, nothing can go back to the way it was. Holopainen loses everything he holds dear. When a familiar person from the past enters his life, Holopainen must decide what still matters.

The trauma center is facing its busiest day of the year: New Year's Eve. Jannica Ronkainen, a surgical nurse on duty, is already looking forward to the end of the year. Tired of her relationship troubles, Jannica wants anything but new romantic worries for the coming year – until she encounters a ghost from her past at the hospital. New Year's Eve offers Jannica the chance for one last adventure of the year, but the clinic's new and demanding surgeon, Eero Mustonen, adds challenges to Jannica's plans.