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.
Production companies：
Sangeori Pictures
·
Fantagio
·
CJ Entertainment
·
Budget：$2,200,000.00
Revenue：$31,500,000.00
Overview：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.
