Su-yeon, a cellist in an orchestra led by her fiancé and conductor Sung-jin, disappears one day, leaving behind only a video recording. Sung-jin is devasted over the loss of Su-yeon,…

Hayoung, a successful dog trainer, is visited by her sister, Sora, who has a criminal record for murder. As Sora’s bizarre behavior unsettles the training center and Hayoung’s daily routine,…