La Belle et la Belle plot
25-year-old Margaux lives a carefree but unsatisfied life interrupted by frequent one-night stands. One evening, at a party, she meets another Margaux, who is 20 years her senior. Disturbing details and similarities seem to connect the two women. Starting with the 6:57am train taking them both to Lyon the next morning. On the train, Margaux (45) runs into her still very handsome ex Marc, whose charm inevitably takes hold on Margaux (25). Soon, both women find it increasingly difficult to let go of each other, and also to let go of Marc.