Plot: The show opens with a visit to the Arizona-Sonora Desert Museum, where the natural-looking environments are the result of painstaking human artistry, including the casting and construction of artificial rocks. On site, new windows have arrived, and window consultant Forrest Campbell explains their features, including true-divided-light appearance with thermal pane efficiency, custom-matched, high performance exterior paint, and, for the French doors, a one-move, three-point pin locking mechanism