Morgravia Sanctus is being hunted; why or by whom she doesn't know. Something terrible has happened to her, a profound trauma that has left behind 'red dreams' and a physical agony that can strike at any moment. Her life in danger and her memory fragmented, she arrives in the low-hive of Blackgheist to escape her pursuers and search for 'the Broker' – a trafficker in memories and psychic mind manipulation. Soon after, a plague sweeps the city, turning its citizens into blood-hungry monsters. Order collapses, death and slaughter are rampant. Caught up in the carnage, Morgravia must flee once more. But as the ravening spreads, is there any hope of stopping this contagion?