A policeman, haunted by memories of past failures and faced with opposition from loved ones, finds himself under pressure to protect the citizens of his community. In Duncan Switch, most deep night shifts are quiet, but tonight's converging events threaten to smother his efforts and test his ability. Protecting a fellow officer, a hostage situation, and working the night shift short-handed tests the officers of Duncan Switch, Texas. One of them finds the biggest challenge of the night still ahead.