One thought can lead to heaven, another to hell.
Leaving his dark past behind, retired military doctor Lei Dong chose to live an ordinary life, until the Saint Crystal Crisis erupted.
The Saint Crystal was an energy source coveted by everyone, but it triggered an unprecedentedly horrifying biohazard. Once-prosperous cities became sanctuaries for the undead!
As the zombie hordes attacked, the authorities of the Far Eastern ancient nation stood by and did nothing. Was there an even more terrifying force behind it all?
A thousand years passed in the blink of an eye. The HBY Foundation, overlord of the underground world, held sway over everything, its shadow looming over the entire Far East. The "demons" known as Modified Ones returned to the scene, while the Foundation's fallen angels savored evil and stared into the abyss!
The progenitor of humanity called on mortals to fight alongside the demons against those from the heavens. More than a hundred demon authorities and the various "Sinful Saints" stirred up chaos, as a hundred saints vied to make their voices heard!
The moment Lei Dong ceased to be ordinary, he was swept into the heart of the storm. Only by destroying the "fallen angels" and putting an end to the conflict between demons and mortals could this world be saved!
And only then could innocent souls be saved!
