Aspiring singer Park Young-Eon's life is cut short when she's mysteriously killed at her high school, with her body vanishing into thin air. Trapped between worlds, her ghost remains invisible, but her best friend Kang Sun-min can hear her whispers. After their music teacher's tragic suicide, Sun-min and her friend Cho-Ah uncover a dark secret: another student, Hyo-Jung, died in the same elevator years prior. As Young-Eon's memories come flooding back, the truth behind her untimely death slowly unravels.
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Aspiring singer Park Young-Eon is brutally murdered and her body disappears, leaving her ghost trapped in her high school. Her best friend Kang Sun-min, a popular lunchtime DJ, is the only one who can see and hear her, setting the stage for a haunting and thrilling mystery.
