The year is 43 AD. A Roman outpost on the banks of the Thames River, called Londinium, is rapidly expanding. Roman builders use trash to support the docks of the new port -- today that trash reveals fascinating details of daily life in the ancient city. London prospers, and the constant struggle with trash generates huge public projects that alter the shape of the city and affect the lives of every Londoner. An Englishman invents the world's first toilet. Trash helps Britain win two World Wars but leads to the tragic deaths of thousands, by smog. Today, London continues to experiment with new ways of converting trash to energy, such as the construction of the world's largest trash incinerator.