After 20 years away, Isabelle, a former climbing champion, returns to her village in the Alps for the funeral of her mountain-guide father. She decides to open up a new climbing route with the help of Kenza, her protégé - something she'd planned to do with her father. But the past and its secrets resurface through Antoine, a brilliant mountaineer who was Isabelle's first love.
After a drunken evening and an unforgettable night with a total stranger, Manu wakes up alone to find a message on his arm giving him an appointment in Avignon. Convinced that the appointment is with the dreamy woman from the night before, he is ready to do anything to find her again.