Mia and Frida, two young 30 years old, meet for the first time to celebrate the engagement of their parents. Mia’s father, Lasse, is about to be married to Frida’s mother, Elizabeth, which will make Mia and Frida stepsisters become. Lasse’s daughter, Mia, who has not visited the father in 30 years, came with her boyfriend, Tim, with whom intend to marry.
Both Mia and Frida get to know one another, and strong emotions begin to take hold of the two young women. Their relationship will change everything upside down for everyone, with dramatic consequences for all.