Made half-human and half-spirit by accident, a young man is employed by a company of grim reapers in the underworld to carry out special missions.

Choi Jun-Woong (Ro Woon) looks for a job, but it is hard for him to get hired. One night, he accidentally meets grim reapers Koo Ryeon (Kim Hee-Seon) and Im Ryoog-Gu. The two grim reapers belong to a crisis management team. Koo Ryeon is the leader and Lim Ryung-Gu is a member. Their objective is to save suicidal people. Soon, Choi Jun-Woong becomes a new member of the crisis management team.—AsianWiki