This drama is adapted from the comic of the same name. It tells the story of an unemployed student Choi Joon-woon (Kim Ro-woon) who falls into a coma due to an accident and meets the hell messengers Gu Ling (Kim Hee-sun) and Lim Yong-gu (Yoon Ji-wen) who are on a special mission. He then enters the underworld's exclusive enterprise Zhuma Deng as the youngest member and works in the crisis management team of the soul management headquarters to help those who are in crisis.