The female protagonist's parents were falsely accused and imprisoned due to a bridge collapse incident, where they were tortured to death. Determined to become a lawyer, she vows to speak out against injustice and clear her parents' names. She tracks down those involved in the case, helping them resolve their current problems, and each time she closes a case, she uncovers a new clue. However, a mysterious figure constantly misguides her, leading her down the wrong path in her investigation.