On the daemon world of Torvendis, deep in the heart of the warp storm known as the Malestrom, ancient rivalries threaten to shatter the delicate balance of power, currently held by the Lady Charybdia, daemon princess of Slaanesh. When the warriors of the Word Bearers arrive on the planet, hunting one of their own, the traitor Karnulon, monstrous forces are unleashed that could tear Torvendis apart.