Agroup of students gathered to make a solemn vow that would shape the rest of their lives and change the world forever.

Three hundred years ago, Count Nikolaus Ludwig von Zinzendorf and his friends covenanted together to be true to Christ, kind to all people and to take the Gospel to the nations. Each sealed the vow with a ring which they would wear for the rest of their lives. They could hardly know that within a few years their promise would lead to an explosion of pioneering Christian communities across the globe, the launch of the first modern missions movement, and a continuous prayer watch which ran day and night for over one hundred years. Because it was the Lord Jesus who was Lord of their rings, and of the vow they signified.

Join pilot and author Phil Anderson of the 24-7 Prayer movement on an unforgettable aerial road trip, as a modern-day group of friends race to uncover the history of Zinzendorf and re-establish the Order of the Mustard Seed as a pattern for authentic, relational, missional discipleship in the twenty-first century.