Throughout history there have been times when the light ofthe Gospel has shone especially bright. The revivals of 1859and 1904 in Wales stand as powerful examples. Marked by acommitment to prayer and bold preaching for repentanceinside and outside of the church, the Welsh revivals 'ranthrough the (Welsh) mountains like fire through thatch,' asone commentator describes it. During this outpouring of theSpirit, churches were packed, streets were filled withbelievers singing hymns, and crime rates and drunkennessdecreased dramatically. Prayer meeting routinely ran lateinto the night, and attendees were often seen either cryingover their brokenness or shouting for joy at God's grace asnominalism and dead orthodoxy were replaced by passionatelove for Jesus. This phenomenon was highly publicized by thepress as the spiritual awakening impacted all of Welsh life.This documentary traces the origins of the revival,introduces us to its leaders such as Dafydd Morgan andThomas Charles Edwards, and follows its lasting impact uponthe world and on world missions.