Summary
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Conductor Seong-jin leads an orchestra where his fiancée, Soo-yeon, serves as a cellist. One day, Soo-yeon disappears, leaving behind only a video message.
Seong-jin is devastated by the loss of Soo-yeon, but finds himself drawn irresistibly to Mi-joo, the cellist who replaces her. On a rainy night, consumed by their desires, Seong-jin and Mi-joo commit an unforgivable act in Soo-yeon's home.
Meanwhile, Soo-yeon, thought to be missing, is trapped in a sealed room from which escape is impossible, forced to witness the hidden truths unfold.
Source: Wikipedia (CC BY-SA 3.0)
