Rich is their humor! Deep are their passions! Reckless are their lives! Mighty is their story!

Huw Morgan, the academically inclined youngest son in a proud family of Welsh coal miners, witnesses the tumultuous events of his young life during a period of rapid social change. At the dawn of the 20th-century, a miners' strike divides the Morgans: the sons demand improvements, and the father doesn't want to rock the boat.