La puerta de los huesos

Fleets of colossal ships leave Terra in pursuit of a vital mission: to stabilize the Imperium Sanctus after the appearance of the Great Rift. The Risen Primarch, Roboute Guilliman, leads a large force to the sanctuary world of Gathalamor, where the routes through the warp are stable enough to allow the fleet to come to the rescue of the southern half of the Imperium. But the Imperial Regent receives serious news. Warnings about the existence of an ancient civilization, added to the disturbing silence of the troops in charge of guarding Gathalamor until his arrival, lead him to send an advance party to reconnoitre the terrain. In front, Achallor, Shield-Captain of the Adeptus Custodes. Once there, Achallor discovers a world on the brink of destruction, where Imperial forces have been defeated and Abaddon the Despoiler's sinister minions have unearthed an ancient evil: a weapon that could threaten the Primarch and even the Throne of Terra...