In the 1950s, Ray Kroc franchises McDonald's nationwide, but right behind Kroc a wave of other entrepreneurs try to cash in on the fast food restaurant craze. Two Florida visionaries start up what will become Kroc's biggest rival, by re-inventing their kitchen's equipment into the pioneering "flame broiler." Over the next two decades the two iconic restaurants battle it out over burgers, launching signature sandwiches that will become staples all over the world.