France, sports teacher by day, worker by night and activist; Patrick, obscure and lonely Parisian lawyer specializing in environmental law; and Mathias, lobbyist and man in a hurry, will see their destinies turned upside down and intertwined by the terrible act of a desperate farmer.
From the haunted halls of the abbey in the past, a murderous rampage on Halloween in the present, to a monstrous apocalypse in the future; the seventeenth installment brings three tales of terror through every cycle.
