In the year 2019, where the world is under martial law, two rookie cops are tasked to patrol District C-11 where death is just a bullet away.

Local Pennsylvania polka legend Jan Lewan develops a plan to get rich that shocks his fans and lands him in jail.

Two years after choosing not to kill the man who killed his son, former police sergeant Leo Barnes has become head of security for Senator Charlene Roan, the front runner in the next Presidential election due to her vow to eliminate the Purge. On the night of what should be the final Purge, a betrayal from within the government forces Barnes and Roan out onto the street where they must fight to survive the night.