It tells the tale of Petronella (a Scottish/Romany girl) and Fergal (her mysterious Irish traveller boyfriend). As their doomed relationship plays out, a Beast stalks the estate, killing locals, working its way towards our protagonists. Meanwhile Cathal and Liam, two mysterious travellers from Ireland use ritual and magic on a blood hunt. Mary, Fergal's mother performs ritual and magic of her own. As Cathal comes face to face with Mary in a vicious finale we know one thing: the Beast must die.