Lt. Harmon Rabb is a JAG lawyer and is accompanied by Lt. Sarah MacKenzie. Together, they solve cases and problems of various kinds. From a psycho who wanted to bomb a cruise ship from a submarine to taking a risky mission of recon photos. Rabb used to be a fighter pilot until he and his co-pilot were in an accident. From then, he became a JAG. Every week he and Mac have a new case to solve.