A troubled young man steps through the back door of a shop in a small town on a blistering August day. In a rampage that lasts less than 60 seconds, he kills six men and then himself. Maesie Mattsen is the only survivor of the killing spree, but the horror she witnessed has made her too afraid to leave the sanctuary of her backyard. Soon, she will have no choice.
Fearing how their neighbors will treat them, the parents of the killer also feel like prisoners in their home. They experience suffocating guilt for what their son has done, yet they cannot mourn in public.
Meanwhile, the wayward father of one of the victims is returning to town. When he arrives, everyone knows all Hell to break loose.