It's the day of The Purge and the fate of the human race lies in the ETU's hands.

Fugitives Flynn and Regan make a dangerous play as help for the ETU comes from the unlikeliest of sources.

The ETU sets up an elaborate plan to halt The Purge, but how far will Regan and Flynn go to spare innocent lives?

Flynn's past become dangerously present while Emme's investigation into Abby puts her own life at risk.

Abby's loyalty is tested, Flynn hits rock bottom and Regan must bargain one family member's fate for another's freedom.

Regan discovers that she wasn't told the truth about her father's disappearance. Meanwhile, Flynn and Briggs race against the Hunters to acquire a scientist critical to 'The Purge.'

The Hunters attempt to "reprogram" a captive Regan. While the ETU work to locate their missing agent, they deal with the possibility that there could be a mole in their ranks.

The ETU's discovery of the name and suspected location of a High Value Target, dredges up old memories for Jackson. Meanwhile, Flynn, Regan and Briggs attempt a daring raid on a Turkish prison.

Flynn stumbles upon startling new information about his wife, which leads the ETU to a suspected human-hunter collaborator, while Flynn finds himself in an unexpected confrontation.

The ETU capture their greatest asset yet; Jackson goes against his morals to combat the Hunter threat; and McCarthy makes it known the lengths he will go to protect his kind

A new lead sends the ETU team to a Hunter-run drug camp in the jungles of Colombia, while Regan struggles with her past

Flynn and the ETU investigate violent attacks on U.S. soil, and discover the Hunters are working with human collaborators.

When the wife of troubled FBI agent Flynn Carroll goes missing, the trail leads to a shadowy group of international terrorists known as Hunters. To find his wife, Flynn joins forces with the Exo-Terrorism Unit (ETU), a highly classified Homeland Security division charged with stopping the Hunters—terrorists who may not even be human.