Ye Ji-an, the only S-class guide in Korea, was often called the “useless guide” due to her unique trait of having a 0% matching rate with all espers. After failing to match with an esper from Russia and on her way back home, she is suddenly swept away by a gate manifestation and wakes up alone in a strange temple-like place. The world she has traveled to through the gate is the continent of Wisrode, filled only with espers, and in this place, Ji-an is the only guide…