China Steam: Chasing China's Chariots of Fire

A secret railroad, a government hell-bent on making sure it stays that way, and a small group of passionate truth-seekers - it's the stuff of best-selling fiction. Except it's real. There is a labyrinth of steam railways in operation in remote China - the last of its kind in the universe - and filmmaker John Agnew is set on finding it even as Chinese officials deny its very existence.