It is midsummer celebration in the village and it is believed to be a quiet day at the clinic. But after an unconscious boy is dumped, Midsummer Eve becomes a battle against the clock.
In the four-degree water in the lake, young people Lina and Joel paddle out in a canoe. When Lina's father calls to ask them to come ashore, he quickly becomes worried.
Lina and Joel fight for their lives after they are found unconscious in the icy water. Tomas is skeptical about how Markus handled the rescue out on the lake.
The town hosts a cycling festival and Sofia takes the opportunity to take her date Filip out for a bike ride after work. The new doctor, Maria, who has great experience working in Africa, is starting at HC.
A hotel fire breaks out and Markus gets hurt trying to save a woman. Zara is confronted by Kerstin, while she also receives an enticing offer from Espen.
In the season finale a little girl suddenly disappears in the grocery store. Zara is faced with a difficult decision, and Åsa tries to be honest with Tomas.