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.

The early years of notorious serial killer Aileen Wuornos, who marries a wealthy, older man in 1976, only to inflict mayhem within her new family and Florida's high society.