An old friends’ reunion in a mountain lodge gathers a dozen men and women with nothing in common, except an obscure episode in the past in which they were all involved. It left a lasting mark on them all, and it’s perhaps the true and unspeakable reason behind this nostalgic anniversary that nobody seems to be keen on celebrating. A sudden event will completely disturb their plans, forcing them to remain united and work as a team in order to discover the real nature and gauge the consequences of what has happened. Subjected to an ever-increasing pressure, each of them will interpret the events according to their own particular set of obsessions, and from amongst confessions, indiscretions and long-held quarrels, a complex and sordid map of their relationships in the past will emerge, while the shadow of a threat becomes palpable and increasingly near.