A tragic accident leaves an ambitious prosecutor with the mind of a child — forcing him and his mother to embark on a journey to heal their relationship.

Hong Ji Ah is an exorcist who gets rid of unrested spirits to sell houses. Oh In Beom is a fake exorcist who calls himself a doctor of the paranormal to scam people. They serendipitously run into each other one day.

The politician Koo Myung-hui finds his wife in the garage. She is cleaning her son's bloodstained car, which has just run over a person.

Sim Deok-soo is a grumpy landlord running a run-down apartment complex. Suddenly his tenants begin disappearing under suspicious circumstances. A retired ex-detective shows up, claiming a serial murderer from 30 years back has returned.