影片改编自2004年蒂娜·菲编剧的同名电影和百老汇音乐剧，故事讲述新转学来的女孩Cady Heron（安格瑞·赖斯 Angourie Rice 饰）如何与“校园女王”Regina George（芮妮·拉普 Reneé Rapp 饰）展开竞争、取而代之。同时她必须学会如何在高中这个最残酷的丛林中保持真实的自己。 影片片名其实是“刻薄女孩”的意思，这正是蒂娜·菲创作本片的初衷——有时候对女性最刻薄的反而是女性。
The film opens in a bleak police station where celebrated war correspondent Kate Rafter (Seagrove) faces questions from a psychiatrist, Dr Shaw (Kurylenko), as they work through the painful events of Rafter’s life. A horrific incident in war-torn Iraq and the death of her mother (Steed) have brought a haunted Rafter home to Herne Bay, a place she believed she had escaped forever. Her resentful sister (Friel) has not made her sister welcome and her forbearing husband Paul (Miles) fails to broker peace. Whilst packing up her mother’s belongings from her childhood home, Rafter comes to believe there is something strange and terrifying happening in the house next door.
