While practicing after hours in her high school, an aspiring singer is mysteriously killed and her body vanishes. Her invisible ghost is trapped in the school, but her best friend is able to hear her voice.
Not streaming on a subscription service in the US right now.
Starring Kim Ok-vin, Seo Ji-hye, Cha Ye-ryun, Kim Seo-hyung, Im Hyun-kyung, Jeon Yeo-jin, Lee Eun, Yoon Young, Seon Ju-yeon, Won Ae-ri