In the near future, huge tidal surges cover large portions of coastal areas. In a small town, a couple refuses to leave their home.
Two Chinese girls spend their last day together in Belle-Île-en-Mer, a small island in Brittany, France. The next day, Xiaoba is going back to China and Yiyi wanders through the island on her own. The moon shines bright in the night sky and new encounters might bring her out of her melancholy.
When Nathan tries to motivate his friend Marceau to accompany him to the traditional July 14th ball, Marceau refuses. For the first time in years, Nathan and Marceau find themselves alone for the evening, their group of friends having left the country for the city. Marceau is finally persuaded, but they have to hurry, as the ball is a long way off...
