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.

An AI programmer accidentally develops an AI program called Cho Sang Shin, which will identify trashy humans, and she uses it to save people who are in difficult relationships.

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.