The Office of Nuo is the government’s secret department that protects humans from the misfortunes and complications brought on by evil spirits. Yoon Taehee is a Naja* who happens to be an agent in the Office of Nuo. Wanting to recruit a successor, he seeks out those with the ability to see and hear spirits. One day, while on an undercover mission, Yoon Taehee ends up meeting a suspicious student at a high school in the outskirts of a small city in the countryside… “So, friend, how old are you?”