In a bourgeois, intellectual, and elitist Paris, three sisters who couldn't be more different are going through a period of doubt and self-reflection. The eldest is caught up in a torrid affair with a female painter. The middle one is bored with her introverted computer scientist partner. The youngest is emerging from the grief of losing her fiancé. It's autumn, Christmas is approaching, and each of them longs to change everything in her life.

1862. A high altitude inn at the foot of a glacier in the Swiss Alps Each winter the snow isolates the inn rendering it totally inaccessible.