The Silenced

“The lost girls, suspicious school, and abnormal changes...”

Students at a sanitorium boarding school keep vanishing, and no one in charge will say where they go. Joo-ran (Park Bo-young), a sickly girl sent there to recover her health, starts noticing strange changes in her own body. Lee Hae-young keeps her inside the school's walls as she presses the staff, led by Kato Sanae (Uhm Ji-won), for answers, while her own body may be giving her away.