Luce is 20 years old, comes from a wealthy family and is madly in love with Loris, a somewhat disreputable mechanic.
Because of him she argues with her father and all her friends. When Luce needs to fix a mess Loris made, everyone moves away and she resorts to Vicky, a friend who has made some money on an erotic app.
Vicky does not lend her any money, but offers Luce the opportunity to make some in one night by performing together on that app, called Blue.
The two girls will not leave the room until the morning after. Luce has paid off her debt, but she tore her life apart.