Sean, a devoted father, finds himself in a brutal custody battle for his daughter, Meaghan. Just as tensions escalate, the annual Purge commences, unleashing 12 hours of lawless chaos. But this year, there's a twisted twist: the last person standing wins $200 million. Forced to fight for survival and his daughter's future, Sean navigates treacherous alliances, ruthless opponents, and shocking betrayals. His ex-wife, Molly, emerges as a formidable foe, driven by her own desperation. As the Purge rages on, Sean confronts his darkest fears and the true cost of survival. Will he emerge victorious, or will the Purge consume everything he holds dear?