25-year-old Margaux is trying to complete her master's degree and is about to end a job and a relationship. At a party, she meets 45-year-old Margaux, who teaches history and geography at school. Not only do they have the same name, but their life experiences are exactly the same. When the younger self meets the middle-aged self, how will the two people with the same soul but different ages create a better future for each other?