姜老师是从首尔调到雾津慈爱聋哑学校的美术老师。一个雾天姜老师开车出了小事故，在维修站维修车辆时结识了人权组织成员徐干事。姜老师刚到学校不久，就感觉整个学校有种压抑气氛，随后他又听到学校女厕经常传出尖叫声。姜老师觉得学校似乎不一般。一个偶然情况下，他发现学校老师殴打聋哑学生莲豆，正义的他当即联系了徐干事反映此事。徐干事到医院探望莲豆了解事件经过，莲豆竟然告诉徐干事自己不仅被施暴还被性侵，同样遭遇性侵的还有另外两个聋哑孩子琉璃和民秀。琉璃和民秀把他们的遭遇告诉徐干事。原来琉璃和莲豆是被校长和行政室长性侵长达五年之久，男孩子民秀是被恋童癖的朴老师性侵和毒打。民秀还告诉徐干事，他的弟弟也被朴老师侵害，因为实在受不了痛已经卧轨自杀。徐干事得知孩子们这些触目惊心的遭遇目瞪口呆，正义的怒火在胸膛熊熊燃烧。很快慈爱聋哑学校这些肮脏、龌龊、违法的勾当被媒体曝光，人们对学校披着人皮的人渣们无不愤慨，对本身就身患残疾还遭受侵害的孩子们无不同情。法庭很快审理此案，就在人们都翘首期盼正义得到伸张、邪恶终将被惩时，法庭的审理结果再一次刷新人们的认知，让所有人再一次见识到人性的丑陋和不堪…

Ms. Jiang is an art teacher transferred from Seoul to Wujin Charity School for the Deaf. Mr. Jiang had a small accident while driving in a foggy day. When the vehicle was being repaired at the maintenance station, he met Director Xu, a member of the human rights organization. Not long after Mr. Jiang arrived at the school, he felt a depressive atmosphere in the whole school, and then he heard frequent screams from the school's women's toilet. Teacher Jiang felt that the school seemed unusual. By chance, he discovered that the school teacher had beaten the deaf-mute student Lian Dou, and he immediately contacted Director Xu to report the matter. Director Xu went to the hospital to visit Lian Dou to learn about the incident. Lian Dou actually told Director Xu that he was not only raped but also sexually assaulted. Two other deaf-mute children, Liuli and Minxiu, were also sexually assaulted. Ryu-ri and Min-soo tell Officer Seo what happened to them. It turns out that Liu Li and Lian Dou were sexually assaulted by the principal and the head of the administrative office for five years, and the boy Minxiu was sexually assaulted and severely beaten by the pedophile Teacher Park. Minxiu also told Director Xu that his younger brother was also raped by Teacher Park, and he committed suicide by lying on the train because he couldn't stand the pain. Director Xu was dumbfounded when he learned of the shocking experiences of the children, and the anger of justice was burning in his chest. Soon these dirty, nasty, and illegal activities of the Charity School for the Deaf were exposed by the media. People were all indignant at the scum in human skin at the school, and sympathized with the children who were themselves disabled and abused. The court heard the case very quickly. Just when people were looking forward to the justice being done and the evil being punished, the trial results of the court once again refreshed people's cognition and made everyone see the ugliness and embarrassment of human nature... ..