Ayn Rand devotees finally got to hear the question they’ve been reading in print for the past 50-plus years: “Who is John Galt?”

“Atlas Shrugged: Part I,” the long-awaited film adaptation of Rand’s celebrated tome, arrives on Blu-ray and DVD today after its spring theatrical release.

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The film follows a driven capitalist (Taylor Schilling) trying to save her family’s railroad company by using an experimental metal. Governmental regulations, and the disappearance of several noteworthy innovators, threaten to derail her ambitions.

“Atlas Shrugged: Part II” will begin production in 2012, but for now Rand fans can savor the original feature along with a quarter of home video extras: