In Nightwatch the sequel, Emma, a medical student, takes on a nightwatch job in the forensic department. And it is no coincidence. Since the fatal night-30 years earlier, when psychopathic inspector Wörmer almost killed Emma's parents, who were saved at the very last minute by their friend Jens, her family has been haunted by this horrific memory. Her mother Kalinka, actually committed suicide when Emma was 10 and her father Martin is still the shadow of himself.
　　The young woman decides to investigate what happened in her parents’ past. Upon meeting with Wörmer, Emma wakes him from his coma, and unintentionally initiates a bloody revenge on all of those who sealed Wörmer’s destiny.

　　一群大学好友拿到了人气音乐节的入场券，他们带上了自己所需的一切准备在音乐节上狂欢。可是世事难料他们因一场交通事故无缘音乐节，只能被迫暂时在一家民宿中过夜。打算在民宿中狂欢一夜的他们却因为一位不速之客的加入陷入了疯狂的噩梦之中。

　　A 17-year-old girl uncovers a shocking crime on social media and takes matters into her own hands - only to be pursued by a ruthless killer.

　　本片改编自同名童话故事，不过在这个故事里灰姑娘选择了对继母一家进行可怕的复仇。

　　有听力障碍的珠英（李先彬 饰），与妹妹珠憘（韩秀娥 饰）终于买下梦寐以求的新房，却没想到噩梦才正要开始。
　　某天起，珠憘开始被来自公寓某处的神秘噪音折磨得身心俱疲。那让人不耐的楼层噪音，不仅让她无法安睡，更像是潜藏某种黑暗秘密的警告。正当珠英离家工作时，珠憘突然失踪，让惊慌失措的珠英立刻赶回家，并与珠憘的男友基勋（金珉锡 饰）联手追查真相。同时，住在楼下的神秘男子（柳炅秀 饰）也长期受噪音困扰，认定一切都源于楼上的这对姊妹，让他情绪逐渐崩溃，扬言要对她们痛下杀手……
　　真相究竟藏在谁的耳中？噪音背后，又是谁的疯狂正在近逼？