The show revolves around the decisively polar-opposite Simon brothers, Rick (McRaney) and Andrew Jackson/"A.J." (Parker). Rick is the less-refined, but still pleasant, United States Marine Corps Vietnam War veteran with a penchant for cowboy boots, denim and four-wheel drive pickups. His brother, A.J. Simon, is a college graduate with a Wall Street look, a polished fellow with a taste for classic cars and tailored suits. A.J. was a practicing Catholic; Rick was not. Rick lived on a boat in A.J.'s waterfront property. A.J. preferred to follow the rules, while Rick was much more of a free spirit, using a classic P.I. type of approach. A.J. was blond with neatly combed hair while Rick was dark-brown haired with a receding hairline. Rick's Dodge Power Wagon is notable for its dull paint and conspicuously large metal bumper/ramming device, used in one episode -- "Love, Christy" (Season 1, Episode 2) -- to crush the engine of a car. A.J. could afford to be more fashionable in his 1957 Chevrolet Bel Air convertible, and later, a customized Chevrolet Camaro Z28 or 1968 Chevrolet Camaro RS convertible in the two-part episode, "Pirate's Key".