No Whi Oh (Jung Woo) works as a detective. He thinks that he has a pretty decent life. One day, an incident takes place. This causes No Whi Oh's life to change. He becomes a crazy guy, unable to control his anger and he gets angry at everything. He tries to return to his former self, but, during this time, he gets involved with another crazy person, Lee Min Kyung (Oh Yeon Seo)
She has a sophisticated appearance and a fine job, but something happens to her. Her ordinary life collapses and she doesn't trust anyone anymore. She has delusions and is compulsive. No Whi Oh and Lee Min Kyung become attracted to each other.