The Underground Church proposes that the faithful recapture the spirit of the early church with its emphasis on what Christians do rather than what they believe. Prominent progressive writer, speaker, and minister Robin Meyers proposes that the best way to recapture the spirit of the early Christian church is to recognize that Jesus-following was and must be again subversive in the best sense of the word because the gospel taken seriously turns the world upside down. No matter how the church may organize itself or worship, the defining characteristic of the church of the future will be its Jesus-inspired countercultural witness.

Meyers debunks commonly held beliefs about the early church and offers a vision for the future rooted in the past. He proposes that the church of the future must leave doctrinal tribalism behind and seek a unity of mission instead. Archbishop Emeritus Desmond Tutu says of this volume: "Robin Meyers has spoken truth to power, and the church he loves will never be the same."