Grace Hanadarko is an Oklahoma City police detective with an alcohol problem and a self-destructive lifestyle. After she hits a man with her car while driving drunk, she asks God for help and an angel named Earl appears. Earl wants to help her find the right path of life again, but it is going to be a hard piece of work for both of them.

A 17-year-old devout Christian comes under attack just days before he’s scheduled to testify in a murder trial. In order to ensure his safety, Grace allows him to move in with her. But Grace can only handle so much preaching, so she ropes the guys into helping her watch over him. Grace gets pissed when Earl uses Leon Cooley and her nephew, Clay, to get her attention.