freeOK概要：A mysterious man named Yeon woo came to the police station to report that his wife was missing. Detective Yeong sook and Tae sik are investigating a missing person case together. Meanwhile, Yeon woo's missing wife was locked up in a dark room in the basement. The kidnapper with a fierce appearance is named Man Zhi. The terrifying feeling that she might have been murdered reached its climax. Will Yoo mi ultimately be murdered?
