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.

John Fink is the patriarch of a family doomed for turmoil. He has been released from prison but continues to traumatize his family and those who love him including his own son. Johnny Fink Jr. doesn't want to continue the life of crime set up by his father and refuses to pass this plague down to his own son.