A group of people start showing mysterious symptoms and there's a possibility it might be an infectious outbreak so Kristin has her work cut out for her. The outbreak causes an upheaval in Ragnar's family as his father's 70th birthday party is in danger. Lilja notices bruises on Matti that he begs her to ignore. Ragnar tries to fight his feelings for Kristin and is also struggling with his conscience regarding his younger brother, Siggi, Hanna's husband and Matti's father. Hanna's black eye sets off alarm bells, but seeing the loving family happy together, mutes them. As the birthday party takes an unfortunate turn, Ragnar turns to Kristin for comfort.