指挥家成镇(宋承宪饰)和他所率领的管弦乐团内的大提琴手秀妍(曹汝贞饰)即将结婚,但某天秀妍突然消失了,只留下了一段视频向成镇道别。失去秀妍的成镇虽然感到很痛苦,但他却被代替秀妍的大提琴手美珠(朴智贤饰)所吸引。某个雨夜,渴望彼此的成镇和美珠,在秀妍家做了无法被原谅的事,而被认为消失的秀妍,竟被关在无法独自逃脱的家中密室里,注视着他们……。Seemingly perfect high school senior, Olivia, struggles with grief from the recent loss of a friend. When she gets deferred from her dream college she begins to spiral and experiences a series of increasingly frightening panic attacks. In an attempt to regain some sense of control, she embarks on a social media-fueled rampage against those that stand in the way of her success b...。