In this world there exists espers & guides .. espers are born with supernatural abilities but the more they use them the more dark energy they gathers & in order to purify those energies a guide is needed ..Kang Yoonwoo , a B class guide working at a guide center eastern branch … One day, while Yoonwoo was going through his daily routine, he got unexpectedly visited by Kim Hyeontae , a S class Esper who is super popular & elite …,. Kang Yoonwoo was initially unsure about properly guiding him due to his lower rank was found out to be greatly compatible with Hyeontae …And as Yoonwoo never expected, he keeps coming back for him & he soon beacme his personal guide …
