劇情:

單親爸爸仁浩在光州一所聾啞學校找到一份教職，工作對債務纏身的他已不容易，還要為校內付出的捐獻。不久後他發現校內一些嚇人的事件，學生對老師十分懼怕，對校內的員工絕不信任，晚上更傳來令人不安的叫聲。一晚，他發現為人帥表的成人對弱小的學生殘酷不仁的行為，於是聯同社工柔珍合力揭發校內對學生施予性和各種暴力的黑幕。但當他們把人面獸心的師長繩之以法時，發現這些黑幕的背後卻隱藏著貪污腐敗​​的韓國教育體制之下…

Synopsis:

            In-ho, became an art teacher at Ja-ae Academy, a school for deaf children. On his first day, In-ho is shaken by the blatant requests for bribery by the twins who act as the principal and the head of administration respectively and unwelcoming vibe among kids. Min-su comes late to class, bloodied and bruised his eyes full of rage. In-ho cannot understand the excessive punishment inflicted on the children by some of teachers. One night, he discovers Yeon-du torturing by an after-school counselor Yoon Ja-ae with a washing machine. Outraged, he takes Yeon-du to the hospital and the doctor tells him that Yeon-du was sexually assaulted. This leads to In-ho’s discovery that the principal, the head of administration and other teachers had been abusing some students. Yu-jin visits the district police and education boards to report the crime, but nothing comes of it. Eventually the news media gets involved and the principals face a trial.