Across generations, people have flocked to this Atlantic Coast city to follow their dreams. Farm workers from south Georgia arrived here in search of jobs as longshoremen. Immigrants from Lebanon and other Middle Eastern countries came in search of religious and economic freedom. Those dreams inspired prayerful songs like "Lift Every Voice and Sing." And they inspired the hard work and adaptation that drives a sandwich culture here that's second only to New Orleans. Getting to know the Salameh family, proprietors of All American Hot Dogs and Sandwiches; and the Doe and Boutros families, who run Russ Doe's Sandwich Shop, we get a glimpse of what it takes to realize those dreams.

The behind-the-scenes episode returns for a sprint across the belly of the SEC, in search of really good cheeseburgers. Highlights include: Burger Burger in Biloxi, Miss., for po-boy loaves, layered with double patties and onion sauce; Troy's Snack Shack in Montezuma, Ga., for beautifully sloppy chili-slaw burgers; Hamburger King near downtown Montgomery, Ala., for burgers that pick up an ideal char from the griddle; and Downton Grill in Macon, Ga., for a conversation with Will and Jenni Harris of White Oak Pastures in downstate Bluffton, who talk with Edge about the new-old promise of raising beef cattle on grass.