Widower and former pastor Rex Wells is struggling with Parkinson's disease when his twenty-seven-year-old daughter, Wendy, lands the starring role in an action movie. He makes the arduous journey from Nashville to the Hollywood premiere but finds the aptly titled Overkill almost as disagreeable as her filmmaker boyfriend—a millionaire twice her age and, for better or worse, the father of Rex's newborn grandson.

Even as Overkill makes Wendy a star, a scandal from her past ignites a paparazzi feeding frenzy, and Rex finds himself contending with an anonymous internet troll whose disturbingly personal attacks force him to confront a past scandal of his own—the adulterous affair that cost him his ministry. When Wendy enlists him in a morally dubious publicity scheme, he has to decide how far he's willing to go to protect her career.