Fall, 2013, ex-college professor Seiji Nakahara, using a hunting rifle, shot Kenji Iwasaki dead and turned himself in at a police station immediately afterwards.
May, 2012, Seiji Nakahara's daughter, Yukiko, is found dead. She was raped and strangled to death. Kenji Iwasaki was arrested for the crimes, but he was acquitted at his trial due to police brutality directed towards him. After his acquittal, Seiji and his wife, Akiko, fell into despair. Not long after, Akiko became ill and died.
Seiji vowed to take revenge on Kenji and the legal system that failed his family. Seiji turned down the court appointed attorney to defend him, because he did not want to receive a commutation of sentence. Nobuko Ogata is then appointed as Seiji’s lawyer. Nobuko begins to investigate his daughter's murder case. She discovers that according to witnesses, Yukiko got into Kenji’s car by herself. While Nobuko looks for answers on his daughter's death, Seiji's trial begins and Seiji suddenly insists his innocence.