Bastion Wars

When a force of daemon-worhsipping renegades invade the Medina sub-sector, whole worlds are imperilled and a few heroes - and villains - find themselves thrust into the midst of cataclysmic events. Inquisitor Roth must locate and secure a cache of dangerous artefacts before the traitors can use their power to drown the region in blood. The brave Imperial Guardsmen of the 31st Riverine are beset by rebellion on what should be a routine mission, and the Blood Gorgons Chaos Space Marines are brought to the edge of destruction when a mysterious plague grips one of their recruiting worlds.