Geum Bok is ashamed of her mother who works as a street cleaner. Her mother, as a single mother, has worked hard to support Geum Bok. Geum Bok's feelings for for her mother begin to change. On their first trip, Geum Bok's mother disappears and Geum Bok is now all alone.
The daughter of a poor widow overcomes her troubles and starts a new life after she gets involved with a terrible crime committed by a son and mother blinded by desire.
Go Da Kyung is an eager rookie investigator who gets paired with the famous forensic doctor, Yoon Ji Hoon. They initially clash due to their different styles of investigation as well as their opposing personalities - Da Kyung's energetic nature is a source of irritation for the prickly Ji Hoon - but later develop a complex relationship as the two strive to uncover the truth through science.