Young Eon (Kim Ok Bin), a timid high school student dies mysteriously while singing in the school's music room. But even in death, Young Eon's voice continues to be heard by her best friend, Sun Min (Seo Ji Hye). Although startled by this supernatural development, Sun Min adapts rather quickly to the situation and tries to uncover the reasons for her friend's untimely demise. But Sun Min's absolute faith in her dearly departed friend is soon shaken when a plague of mysterious deaths start to occur on campus! Are these murders Young Eun's doing? Or could the culprit be someone far more sinister? Featuring appearances by actresses Kim Seo Hyeong and Cha Ye Ryeon, filmmaker Choi Ik Kwan's Whispers is the rare sequel that differs just enough from previous installments to stand on its own, yet still retains the basic elements of the original to lure faithful viewers back for more! Absolute horror lurks around every corner in this fourth addition to the Whispering Corridors saga!