Based on actual events that took place at Gwangju Inhwa School for the hearing-impaired, where young deaf students were the victims of repeated sexual assaults by faculty members over a period of five years in the early 2000s.
Key credits listed on this page include Hwang Dong-hyuk, Lim Sun-ae, Gong Ji-young, Gong Yoo, Jung Yu-mi, Kim Hyeon-soo, Jung In-seo, and Baek Su-ho.