Recently divorced Blandina (aka Olivia Côte) is trying to get back into her life. Her former best friend Magali (played by Laure Calamy), loud and fearless, reappears and insists on a trip they always dreamed of as teenagers: Amorgo Island in Greece, an amazing place where the movie 'The Big Blue' (Le grand bleu, 1988) was filmed. Upon reaching their destination, they realize that their dream vacation is not going as planned, as their perspectives on vacations... and life are very different!