When his girlfriend, Phoebe, is swamped with college exams; Tom O'Bannon, a rowdy pro-wrestler struggling to make ends meet, agrees to fill in as a last-minute replacement for her well paying babysitting job. Tom arrives at an isolated family home where he meets the precocious 10-year-old Grace. What starts off as a quiet night of pizza and video games quickly spirals into bloody, violent chaos as Tom and Grace find themselves fighting for their lives when an otherworldly cult of masked intruders descend on the home.

讲述16岁女孩乔治亚·诺兰梦想成为一名消防员，而当时女性还不被允许做这行。当一个神秘的纵火犯开始烧毁百老汇大街时，这个城市所有的消防员一个接一个消失了，乔治亚已经退休的父亲肖恩被纽约市长召回，领导消防局调查此事。为了帮助父亲和拯救她的城市，乔治亚把自己伪装成一个名叫乔的年轻男人，加入了由一群格格不入的消防员组成的小组，不惜一切代价试图阻止纵火犯。