Years after waves of a mysterious fog blanketed the globe, seeing people with unimaginable powers and scenes of deadly chaos has become an almost everyday occurrence. Though many of these gifted humans, known as espers, choose to do good with their new powers, prolonged use always results in corruption - a darkening of the mind and soul. The very safety of society relies on the help of those who can guide this darkened energy, and thus the powerful Esper-Guide Association was born. Yet for Han Yoonjae, though living as an undocumented esper proves to be both dangerous and illegal, joining the association simply isn’t an option. That is, until the mysterious and alluring Cha Minhyung shows up: tall, dark, and oh-so-determined to become Yoonjae’s own guide. The thing is, before he gives in to Minhyung’s increasingly tempting offers, Yoonjae needs to figure out why the other man is so insistent on guiding him, specifically…