Carl Black and his family are getting out of Chicago. After having stolen a lot of money from a famed criminal drug king, Key Flo (Charlie Murphy), and believing that he will be imprisoned for the next five to six years, Carl Black (Mike Epps) leaves the hustling lifestyle behind for something better. Carl, his new wife Lorena (Zulay Henao), son Carl Jr. (Alex Henderson), daughter Allie Black (Bresha Webb) and cousin Cronut (Lil Duval) pack up and move to Beverly Hills. Turns out, Carl could not have picked a worse time to move. They arrive right around the time of the annual purge and all Carl's personal issues intertwine while all crime is legal for twelve hours.
When best selling author Carl Black moves his family back to his childhood home, he must team up with oddball neighbors to do battle with a pimp, who may or may not be an actual vampire.