Evil spirits from the afterlife arrive on Earth in search of an immortal existence. The story follows a group of counters who are tasked with catching these malevolent entities. The show is based on a webtoon that has been ongoing since 2018 and has been popularly serialized on various online portals."

Kang Nam Soon has superhuman strength. She went missing as a kid in Mongolia. Now as an adult, she comes to Gangnam, Seoul, South Korea to find her parents. She finally meets her mother Hwang Geum Joo. Her mother is a wealthy woman and a resident of Gangnam. After she lost her daughter, Hwang Geum Joo tried to find her daughter and she also tried to live a righteous life, obsessed with doing good deeds. Gil Joong Gan is Hwang Geum Joo's mother and Kang Nam Soon’s grandmother. The grandmother and mother were also born with superhuman like strength like Kang Nam Soon.Somehow, Kang Nam Soon, her mother Hwang Geum Joo and her grandmother Gil Joong Gan get involved in a drug case that takes place in Gangnam. Detective Kang Hee Sik begins to work with the 3 women on the drug case. Detective Kang Hee Sik also becomes attracted to Kang Nam Soon.