Xiao Yi took Dou Zi Lin to investigate the Women's Virtue Academy, a school shrouded in an eerie atmosphere. Everywhere they looked, there were layers of locked iron gates, terrifying eyes, a group of dull and expressionless students, a dismissive principal, and ruthless and ignorant teachers. Teacher Sun Min, in particular, showed extreme dissatisfaction with the arrival of the police, and under her influence, the students remained silent during the police inquiries.

The police conducted an investigation in Zhang Huai Shi's office, and faced with solid evidence, Zhang Huai Shi admitted to raping Li Qiu Mei but denied being her killer. Since Zhang Huai Shi was not the murderer, the police focused their investigation on Sun Min, as the dumping site for the two bodies was close to her home. The police went to Sun Min's house for questioning and, through interviews with neighbors, learned about Sun Min's unfortunate experiences, including prolonged domestic violence from her second husband, which severely distorted her psyche.

The police rushed to the school to save the hostages, while Sun Min, overwhelmed with guilt, committed suicide. The case of Li Qiu Mei was solved, but what about Wei Lan's death? Wei Lan's glasses, equipped with a camera function, provided everyone with an explanation. Wei Lan discovered that Zhou Yan was being abused and wanted to take her away, but she was caught by Hao Ying, who punished her by assigning her cleaning duties. Wei Lan unintentionally witnessed Sun Min's complete process of killing Li Qiu Mei, and Sun Min, realizing she had been witnessed, made Zhou Yan her accomplice.

How long will it take for these mentally tormented women to emerge from the darkness? Poor Zhou Yan is just a child! Sun Min and Zhang Huai Shi's psychological distortions have reached a severe pathological level, deeply damaging their moral compass. While their initial experiences were indeed deserving of sympathy, they embarked on a path of extreme cruelty, inflicting unspeakable harm to others' mental well-being.