2008 film by Jeong Yong-gi

才茵（金善雅 饰）这名女警精明泼辣，因为追查黑帮的任务，让她不得不重新回到校园，做会高中生。
阔别校园多年了，才茵的知识面当然跟不上其他人，而且处处保护自己怕被人看穿。班里一名大姐头慧玲（洪秀儿 饰）也看才茵不顺眼，处处为难才茵。碍于自己的卧底身份，才茵只好忍气吞声。
让才茵从阻滞中颇感开心的是她对班上一名叫鲁荣（孔俞 饰）有好感了，可是想到自己的真实身份与年龄，才茵的心中感到沮丧。
行动好不容易得到了进展，追查对象开始相信才茵，她更取得了重要的线索，但行动又发生了变数。

Lead by matriarch widow Hong Duk-ja, the Hong gangster family turns legitimate, but a figure from their past returns to undermine and ruin their popular new business.

Five people are invited to a remote doll museum and one by one they are mysteriously killed. The survivors find out the truth: dolls have spirits, and they have come to settle scores.