Eight women attend a bachelorette party at a remote farmhouse in the California hills. They are interrupted by the arrival of masked intruders who surround the place and begin shooting arrows at the home and the guests. One partygoer Tess, a military veteran who is fighting her addictions and her difficulty at fitting in with other people leads the women in making a stand against the attackers as they fight back in an effort to save themselves over the course of a single dark night.