当保姆凯莉·弗格森照料的孩子雅各布被怪物绑架后，她被一个保护儿童的秘密保姆组织招募，共同对抗怪物以拯救雅各布。

This three-part, self-contained limited series is about the newest member of the Midnight Society, her first scary tale, and what happens to the group when the terrifying events of her story start to actually happen in their small town.

本影集改编自吉儿·墨菲广受欢迎的书作，描述一名笨笨的女主角在阴差阳错下进入女巫学校就读后，意识到自己可能属于那里。