Dimbleby embarks on a 6000-mile journey through Brazil, the continent's largest country and home to 190 million people. Nowhere is evidence of the economic boom in South America more apparent, but Jonathan finds the road to riches is paved with dilemmas for both Brazil and the wider world. In the Amazon, architects and cattle ranchers are grappling with environmental tension. On the coast, descendants of runaway slaves are fighting the expansion of a satellite launch facility to protect their land. And in Rio, Jonathan joins the commander of a new police force as they seek to pacify the slums ruled by the law of the drug lords.