Kang Hee Kyung is the well known Chief Surgeon of University Hospital. Her husband unexpectedly dies in a car accident with his mistress. Kang Hee Kyung is shocked by the accident. Since that time, Kang Hee Kyung pours excessive love on her sole daughter. This has negative consequences on her daughter. Her daughter gets caught up in a mix of sex and drugs. She then kills someone by accident. Kang Hee Kyung then coverups her daughter's involvement in the killing. Prosecutors and detectives try to find the truth behind the case, where the body has yet to be found. Adapted from the novel "Case Number 113" by Ryoo Sung Hee.