This drama is adapted from the novel of the same name. It tells the story of the highly anticipated lawyer Chisa Matsuoka, who is affiliated with the largest law firm and was promoted to be responsible for the retrial of the "Ayakawa Incident" in Kagawa Prefecture 21 years ago. At the same time, she was one of the victims of another unreported abduction of a young girl. Chisa returned to her hometown to investigate and found that the three cases might be related. Facing the suspect Satoshi Hirayama, she was entangled in trust and professional ethics. In order to find the real murderer, she trusted her client Hirayama and defended him. In the end, she found the truth in the struggle with pain and the past and overcame the nightmare.