In 1840s Scotland, John Ferguson makes the difficult decision to become one of the evangelical ministers leaving the Church of Scotland to help form the Free Church of Scotland. It means giving up his job and income, but at least his church will be free of patronage and interference from the British Government. Also, it’s not the life he’d promised his wife Mary, but she accepts his choice.

The other major political upheaval besides the Disruption of the Church of Scotland is the ongoing Hi...