Ten years after surviving a car accident in which her mother and brother were murdered, Olivia, returns to the French Riviera with a new identity and a single purpose: Retribution.
Valentine is convinced she's in love with Jérôme, her best friend and work partner. She decides to share her feelings with him while they're away in Bora Bora on a business trip but his new girlfriend, Céleste, has decided to tag along.