A prototypical B-grade guide, Kang Yoon-oh is content with his ordinary life as an average guide. That is until one day, an S-grade esper, Kim Hyuntae, comes to him for guidance. After finding Yoon-oh's guiding abilities extraordinary and exactly what he needs, Hyuntae eventually requests that he become his very own personal guide. Now, working for Hyuntae, Yoon-oh's life is…