Years ago a massacre struck the Earth, the dungeons being opened , allowing a connection between this world and the parallel. The parallel world was teeming with monsters and vicious creatures that rained destruction on Earth. With the evolution of a new Earth was the evolution of new people; espers and guides. About 5% of the human population was born with super powers, being ranked in different ranks the highest being S. But their bodies would often get contaminated with the amount of power they used leading to them rampaging, that's when the guides came to purify their bodies with a touch.

Aiden Ross was an S grade hunter, the strongest in the nation, his popularity and his strength were unmatched, but greater power led to a greater risk, his contamination was easy and his rampaging was deadly,it was necessary for him to keep his levels under check, but as it was difficult to find an S rank esper, it was also difficult to find an S rank guide who could ease his contamination. Aiden was bound to his room as his body got engulfed in darkness slowly, several E to A rank guides were sent his way, but to no avail. Finally the last Guide came as they were practically thrown inside the room and the room was locked from outside