Since Ka-in (Yoon Jin-Hee) withnessed her Auntie Ji-Seon got murdered by her youngest Auntie Jeong-Sun, Her life is thrown into turmoil. Thing started to get worse when Ka-In herself is attacked by a nerdy yet dangerous classmate named Eun-Kyung. Worst still, her tutor who is kind to her started to attack her verbaly. Furthermore, she is repeatedly being observed by a weirdo called Suk-Min (Park Gi-Oong). Nightmare start to haunt her continuously and for now she can only believe in her families and her boyfriend Hyun-Joong (Lee Gi-Woo). However, no matter how cautious she is, no matter how hard she tries, she still unable to free herself from the deadly trap? Will he be Hyun-Joong who plight to protect her? Or stranger Suk-Min or Ka-In's dearest families?

一天，佳人.（尹珍熙）和青梅竹马的医生男友贤重（李基宇）前来探望生病的大姑姑智善，不料却亲眼目睹了最小的姑姑贞善（徐有情）杀害大姑姑的惨况。佳人因此受到了很大的精神冲击。此事件慢慢平息后，佳人的身上总是会发生一些很莫名其妙的事情。高中时期的异常回忆也慢慢涌上心头：同班同学恩京好像时时想置佳人于死地，甚至连原来和蔼的班主任也冷言冷语地攻击她，佳人陷入了毫无信任和安全感的困境。更离奇的是，每次出现在现场的男孩锡民.（朴基雄）总是用可疑的眼神默默地在旁注视着佳人。就像坠入一个连环的迷宫，不管佳人怎么小心翼翼，努力挣脱出来，死亡的圈套还是渐渐地“勒紧”了她的脖子。声称誓死守护佳人的贤重？陌生而亲切的锡民？熟悉的亲人？想杀死佳人的“背后灵”到底会是谁呢？