During a bachelorette party in a secluded California farmhouse, masked intruders launch a brutal attack, forcing eight women to fight for survival. Led by Tess, a troubled military veteran, they unite to defend themselves throughout a harrowing night.

After spending time in prison following an assault charge, Connor Bates now works in a library and spends his free time running, swimming, and trying to piece his world back together. When he meets Marilyn Chambers, the wife of a wealthy businessman, they collide into an intense physical and emotional relationship that quickly escalates into idle talk about her husband’s murder.