Although he has been missing for several years and the entire town thinks her father has abandoned her family, Meg steadfastly believes the best and protects her younger brother, Charles Wallace, from the brunt of the rumors and taunting. It is he, however, who convinces her to join him, the school sports star Calvin, and three unusual women on an interplanetary voyage to rescue their father from a vast evil.

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...