Dalarna, a county north of Stockholm, is famous for its landscape and is a popular tourist destination. The residents are called Dalecarlians. Stubborn and self-centered, they consider their county the heart of Sweden. Mia, the youngest of three sisters, moved away from Dalarna 15 years ago and has turned into a fast-living Stockholm single. However, her father, Calle, is turning 70, so Mia reluctantly drives back to her hometown to take part in the celebration. Mia's eldest sister Eivor is married with children. She has a big heart but the years have made her cynical. The other sister, Gunilla, is recently divorced; she's just back from a trip to Bali and can't stop talking about the great sex she had there. When Mia arrives, father Calle announces he is willing a nearby piece of land to her. When Calle's birthday party finally starts, anger and jealousy, fueled by booze, rise to the surface. By the following morning, lives have been changed forever.