Fifteen-year-old Isobel Miller's life is tumultuous due to her Army Major father and pregnant, chain-smoking, alcoholic mother. Each relocation feels like another blow, and when they settle in the remote village of Langham, Isobel's resentment reaches its peak. She feels isolated and angry, especially towards the unborn sibling she never asked for, in a place lacking even basic amenities like street lighting.

In this bleak landscape, Isobel finds solace in her grandfather, a master storyteller whose tales provide a glimmer of light in her otherwise dismal existence. However, when a local newspaper features one of his darker stories, Isobel is unwittingly thrust into a world of malevolence and devil worship. A mysterious book, an ominous harbinger, triggers a series of catastrophic events, plunging Isobel and those around her into a spiral of tragedy and despair.

In the midst of chaos, Isobel finds unexpected allies in three other teenagers-Peter, Oswald, and Ariel. Together, they forge a bond strong enough to withstand the onslaught of darkness, or so they believe. As they confront the forces of evil, they soon realize that their greatest adversary might not be of this world. In a battle against the infernal, their friendship and courage will be tested like never before, and the stakes could not be higher-nothing less than their souls, hang in the balance.