In the city of Jungjin, there is a group of Counters who bears the task to search and banish evil spirits that posses human hosts who have committed murder. One day, Counter Cheol Jeong is killed in a battle against a level 3 evil spirit. Wi Gen who is a Yung Spirit that lives in Cheol Jeong needs to find a new human host Counter. Uncannily, she was drawn towards a high boy names So Mun. So Mun became one of greatest Counter and through the process of catching evil spirits, they uncovered the ugly truth behind a major development project in Jungjin City.
