Galaxy in Flames

"The heresy revealed"

- Book's tag-line

Galaxy in Flames concerns the virus-bombing of Istvaan III and the Warmaster Horus' ultimate fall into madness, which resulted in a galactic civil war where brother would fight brother. In the virus-choked wasteland of death and destruction that was once Istvaan III's Choral City, Loyalist elements of the Luna Wolves, World Eaters, Emperor's Children and Death Guard Legions fight against the Traitors of those Legions in a desperate show of defiance, as the first move of the Heresy is played out.