US Senator Charlie Roan is tired of the "Purge", 12 hours of lawlessness and murder, which are held in the country every year and remain unpunished. A woman is running for president, and plans to stop this tradition, but authorized people are against her idea. As a result of the betrayal Roan appears in Washington streets during thr next Purge, and the only one who can save senator is a head of her security service Leo Barnes.