After a chance encounter, headstrong Kathy is drawn to Benny, member of Midwestern motorcycle club the Vandals. As the club transforms into a dangerous underworld of violence, Benny must choose between Kathy and his loyalty to the club.
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.