Detective Oh Jin-seong's truth-tracking drama that faced a shocking situation that "My brother became a murder suspect"
Detective Oh Jin-seong, who’s been protecting his hometown, Woojin, arrested his mother Hong Young-hee as a gambling offender, and one day, he struggles to reveal the innocence of his younger brother, who suddenly became a suspect in a serial murder case. However, this is only the beginning, and Oh Jin-seong, who realized that a bigger conspiracy lurks as he approaches the truth of the incident, eventually faces the shocking reality of the desire surrounding his family he trusted and relied on for 30 years.