When a fighter pilot claims he heard the voice of God tell him not to fire on an attacking Iraqi, Harm and Mac are sent in to investigate his claim. Despite the pilot's assertions that he heard God, Harm insists on finding a more "military" explanation. When Harm fails from the ground to discover the origination of the voice, he suggests that Rice duplicate his earlier mission to see what they can learn about the incident in the sky.
After being diagnosed with night blindness, Lt. Cmdr. Harmon Rabb, an F-14 Tomcat fighter pilot, is forced to change careers. Cmdr. Rabb chooses to join the Navy's Judge Advocate General (JAG) Corps. There he both defends and sometimes prosecutes Navy and Marine Corps defendants. He is sometimes assisted by fellow lawyer, Lt. Sarah "Mac" MacKenzie, and his other fellow JAG staff.
Many of Rabb's cases require him to both keep up his F-14 qualifications and travel the world, in order to bring justice to the cases he is trying.
Rabb must also deal with the fact that his father, also a former Navy pilot, never returned home after being held prisoner after he was shot down in North Vietnam. Rabb believing his father is still alive continues the search he has pursued to find his father, since his teens.