Chaxin awakes in a world completely unfamiliar to him. His memories are clouded, except for images of glass and metal. He quickly finds that he's not alone in this new realm. There are others, who all arrived just as he did.

In this strange world, people are driven by survival against forces that have little interest in continued human existence. But through the use of special tomes known as 'grimoires,' people are able to enhance themselves to increase their abilities and 'life properties,' giving them a fighting chance against the monsters that surround them.

Without a chance to acclimate himself, Chaxin is thrown into a bloody confrontation with monsters born of his worst nightmares.

He soon realizes that one false step, could mean his death. But death isn't the worst that the Grim Spheres have to offer.

Can Chaxin survive in such an unforgiving world? If not, more than just his life could be at stake.