After Sam, a London family man in crisis, rescues a troubled young girl in the woods, he brings her home to the ominous Osea Island, where inhabitants are preparing for a curious annual festival involving the island's history. As he meets Osea's secretive locals, Sam grows increasingly desperate to return to the mainland to make an important call - but the island proves difficult to escape.
Elenco: Jude Law , Naomie Harris , Katherine Waterston , Emily Watson , Paddy Considine , John Dagleish , Freya Allan .