It's been two years since Leo Barnes stopped himself from a regrettable act of revenge on Purge Night. Now serving as head of security for Senator Charlie Roan, his mission is to protect her in a run for president and survive the annual ritual that targets the poor and innocent. But when a betrayal forces them onto the streets of D.C. on the one night when no help is available, they must stay alive until dawn, or both be sacrificed for their sins...