A wealthy family is held hostage for harboring the target of a murderous syndicate during the Purge, a 12-hour period in which any and all crime is legal.
Three groups of people intertwine and are left stranded in the streets on Purge Night, trying to survive the chaos and violence that occurs.
Former Police Sergeant Barnes becomes head of security for Senator Charlie Roan, a Presidential candidate targeted for death on Purge night due to her vow to eliminate the Purge.
America's third political party, the New Founding Fathers of America, comes to power and conducts an experiment: no laws for 12 hours on Staten Island. No one has to stay on the island, but $5,000 is given to anyone who does.
All the rules are broken as a sect of lawless marauders decides that the annual Purge does not stop at daybreak and instead should never end.
