一伙记者去报道一个试验性社区的揭幕仪式，这个社区中的大部分工作都交由一种刚研发出来的原型机器人来干。一开始机器人们都能很好地工作，与人和谐相处，甚至还能与人一起娱乐，但不久，其中一个发生异常，并迅速传给了其他机器人，随后局势全部失控，机器人对人们开始了血腥大屠杀，这伙记者发现他们要做的不是报告故障，而是要血海求生。

　　At the start of high school, Piper, Sophie, Isabella and Honor think they will be best friends forever, so they sink a time capsule in the lake with a list of things they want to do before graduation. By senior year, they have gone their separate ways. Piper has turned into the class clown, party girl who never passes up a drink. Sophie pledges to stay a virgin until she is married and has created a purity app. Isabella is the feminist femme fatale who's the editor of a zine. And Honor is the pride and joy of the community. Her dream of being a professional ballerina is taking off. But when tragedy strikes, the former BFFs must reunite, break open the capsule and complete the pre-graduation bucket list.