Paris of the thirties of last century. The dark-haired beauty with weary eyes and sensual lips asks Gus MacPherson retired private investigator from New York to take up investigation of the tragic death of her sisters husband and the EU: the bodies of casualties were found in one of the luxury hotels decapitated. The girl did not believe in the competence of the police and tearfully begs seasoned detective did not deny her request.

MIA (Ruth Vega Fernandez) and FRIDA (Liv Mjones), both in their thirties, meet each other for the first time at their parents' engagement party. Mia's father, Lasse (Krister Henriksson), is about to get married to Frida's mother, Elizabeth (Lena Endre), which will make Mia and Frida stepsisters. Lasse's daughter, Mia, has not visited her father in years and arrives with her boyfriend, Tim (Joakim Natterqvist), with whom she is about to get married. As Mia and Frida get to know one another, strong emotions begin to stir between them. Their relationship will turn everything upside down for everyone close to them with dramatic consequences.