It is 1485: a young nobleman sails to the land of his fathers from exile in France. His mission - to capture the English crown. For the first time, a self-proclaimed Welshman will be king of England. Under the dynasty he founds, Wales becomes united with England. For every generation of Welsh people to come, the consequences are huge. But exactly what it means - for the next 250 years, at least - depends on whether you are a landowner or one of the ordinary people.

It's boom time as Wales becomes known the world over for one particular product - Welsh steam coal, the best you can get. In the space of 50 years, 'black gold' builds a new Wales. The coalfield pulls in hundreds of thousands of migrants with a different language and culture, becoming a bustling modern world of its own. Yet no sooner has Wales found itself at the centre of global trade, than the Depression causes an industrial crash with a bitter social fallout.