Over four years and across seven hours of television William Crawley has travelled to America, Canada, New Zealand and Australia to tell the stories of some remarkable Ulster-Scots men and women who made their mark in the New World. Now he returns to home soil to find out what those stories reveal about the Ulster-Scots diaspora as a whole and how the loss of sons and daughters, neighbours and friends over generations has made emigration part of our story and of this world, Back Home.