Joseph (Peter Mullan), a tormented, self-destructive man plagued by violence, finds hope of redemption in Hannah (Olivia Colman), a Christian charity-shop worker he meets one day while fleeing an altercation. Initially derisive of her faith and presumed idyllic existence, Joseph nonetheless returns to the shop and soon realizes that Hannah's life is anything but placid. As a relationship develops, they come to understand the deep pain in each other's lives.