Since the beginning of time, the angelic forces of the High Heavens and the demonic hordes of the Burning Hells have been locked in eternal conflict for the fate of all Creation. That struggle has now spilled over into Sanctuary - the world of men. Determined to win mankind over to their respective causes, the forces of good and evil wage a secret war for mortal souls. This is the tale of the Sin War - the conflict that would forever change the destiny of man.

Since the beginning of time, the angelic hosts of the High Heavens and the demonic hordes of the Burning Hells have been locked in a struggle for the fate of all creation. That struggle has now come to the mortal realm...and neither man nor demon nor angel will be left unscathed....

In the final, apocalyptic chapter of this epic trilogy, the dragon-mage Krasus and the young druid Malfurion must risk everything to save Azeroth from utter destruction. Banding together the dwarves, tauren and furbolg races, the heroes hope to spark an alliance to stand against the might of the Burning Legion. For if the Demon Soul should fall into the Legion's hands, all hope for the world will be lost. This then, is the hour...where past and future collide!

In the first chapter of this epic trilogy, the outcome of the historic War of the Ancients is forever altered by the arrival of three time-lost heroes: Krasus, the dragon mage whose great power and memories of the ancient conflict have inexplicably diminished; the human wizard Rhonin, whose thoughts are divided between his family and the seductive source of his now-growing power; and Broxigar, a weathered orc veteran who seeks a glorious death in combat.

The night elf defenders, led by the young druid, Malfurion Stormrage, and the wizard, Krasus, fight a desperate battle to hold back the Legion's terrible onslaught. Though only embers of hope remain, an ancient power has risen to aid the world in its darkest hour. The dragons - led by the powerful Aspect, Neltharion - have forged a weapon of incalculable power: the Dragon Soul, an artifact capable of driving the Legion from the world forever. But its use may cost far more than any could have foreseen.