In a small Welsh mining town, Emlyn Parry (Simon Lack) leads the local miner’s choir. Upon discovering the beautiful singing voice of David Goliath (Paul Robeson), Parry immediately grants him a job in both the mine and the choir. Parry hopes to win a national choir meet on the strength of Goliath’s virtuosity, but an unfortunate accident suddenly closes the mine, throwing the entire village into jeopardy. Just when things seem like they can’t get worse, World War II breaks out.