The last survivors of a world devastated by Chaos – a father and son – find a Space Marine of the Dark Hunters Chapter, badly wounded, infected with a deadly pathogen and in need of their aid. Together, they must break through the massed forces of the enemy and summon aid, before the world becomes a shrine to the dread forces of the Ruinous Powers.

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Trapped on a devastated world, a father and son must assist a wounded Space Marine as he tries to contact his Chapter and save the planet from eternal damnation.