In a disintegrating and increasingly lawless Britain, a young man is travelling north. Ben is a young painter from the crowded, turbulent city. For six months his fiancée Cara has been living on a remote island known as Sanctuary Rock, the property of millionaire philanthropist Sir John Pemberley. Now she has decided to break off their engagement, and stay there. Ben resolves to travel to the island to win Cara back. But the journey there is a harsh and challenging one, and when he does arrive, a terrible shock awaits him. As Ben begins to find his way around the island, he knows he must also work out - what has made Cara so determined to throw her old life away? And is Sanctuary Rock truly another Eden - or a prospect of hell?