Brother and sister, Martin and Hilda Massie, have moved to Bluebell Hill Development where they hope to enjoy a quiet, Christian existence. Just as they are preparing for a housewarming gathering, their peace is shattered by a young trespasser in their garden. Neighbours congregate, and together they agree to form a neighbourhood watch group to safeguard against crime. But after the Massie’s beloved garden gnome Monty is thrown through their window, matters swiftly escalate, complicated by Martin’s burgeoning romance with Amy, wife of Gareth, rather too soon after her affair with Luther, husband of Magda…….. What begins as a well-intentioned scheme for a safer community ends in violence and acrimony.