Jeremy Kroeker is a Mennonite with a motorcycle. When his seemingly unflinching faith in a Christian worldview begins to shift, Kroeker hops on his bike to seek answers from another perspective. After shipping his ride to Europe, Kroeker discovers that the machine wobbles back and forth worse than his own opinions about spirituality. Still, he caries on, oscillating through Europe—Germany, Austria, Croatia, Albania—and into the Middle East - Turkey, Syria, Lebanon and, ultimately, Iran.

It is there, in the theocratic nation of Iran, that Kroeker finds himself on a forbidden visit to a holy Muslim Shrine. Once inside, invisible hands reach into his chest and rip from his heart a sincere prayer, his first in many years. And God hears that prayer. For before Kroeker can escape Iran, God steals into his hotel room one night to threaten him with death. At least, that's one way to look at it.

In the end, Kroeker comes to accept uncertainty. What does he really know anyway? He may always fear a God that he can't explain. Perhaps if he keeps riding, one of these days God will speak clearly. And that frightens him, too.