Britain, 2019. The secluded rural village of Harrowvale holds a dark past - years earlier, on a farm bordering the vast tracts of woodland, it hosted a cult that was seeking to escape civilization and find purity in the old ways, worshipping an ancient deity called Thistlebone. Led by the charismatic Jasper Hillman, their pagan beliefs grew ever more radical to the point where they held the young Avril Eason captive with the intention of sacrificing her. But Avril escaped!