In Georgia, Police officers respond to a 'trouble unknown' call suspecting a possible medical emergency. Moments after arriving on scene, they are ambushed by an armed assailant and find themselves battling for survival in a life or death stand-off.

A woman is trapped in her burning home, and her only hope of rescue lies with a local deputy. A trainee officer in the middle of a high-speed pursuit pushes his skill to the limit. A gunman in Ohio sets a trap for officers trying to rescue a family.