Marcus and Mike are forced to confront new threats, career changes, and midlife crises as they join the newly created elite team AMMO of the Miami police department to take down the ruthless Armando Armas, the vicious leader of a Miami drug cartel.

Police unearth a sinful conspiracy when they investigate the murder of a pastor's wife.

Starting over isn’t easy, especially for small-town guy John Nolan who, after a life-altering incident, is pursuing his dream of being an LAPD officer. As the force’s oldest rookie, he’s met with skepticism from some higher-ups who see him as just a walking midlife crisis.