A lesbian couple with a rocky relationship go to a pre-wedding retreat and end up fighting for their lives when a group of militant serial killers tries to murder them.

Six members of a media company go on a weekend business retreat at an isolated lodge in the woods. When one of the members goes missing, they discover that the lodge was formerly a private mental institution that had been shut down after allegations of devious misconduct. One by one, they fall victim to the dark secrets buried at the lodge.

Isolés sur une île presque déserte, Kate et Martin, un couple en crise va croiser la route d'un jeune homme mystérieux, les avertissant qu'un virus mortel est en train de décimer la population à travers l'Europe...