Han Jee-Han, a normal high school student, suddenly develops a special power where his entire world is shifted into a game-like setting. He can see the power levels of people, look at the stats of a seemingly normal item, get abilities, and even level up!
While figuring out how far his powers extend he discovers the mysterious world of the abyss and a society of ability users. From then on he tries to protect weak power users and take down evil leaders, some of which are interested in having Jee-Han work for them.