When the members of the elite Baltimore Gun Club find themselves lacking any urgent assignments at the close of the Civil War, their president, Impey Barbicane, proposes that they build a gun big enough to launch a rocket to the moon. But when Barbicane's adversary places a huge wager that the project will fail and a daring volunteer elevates the mission to a "manned" flight, one man's dream turns into an international space race.
A short story, surrounding questions of rivalry and honesty, to whit: when presented with the full-proof method of securing a key victory dishonestly, what should one do. The moral answer is, of course, clear but the reality of the beguiling nature of temptation is something else entirely.
These things are quite improbable, to be sure; but are they impossible? Our big world rolls over as smoothly as it did centuries ago, without a squeak to show it needs oiling after all these years of revolution. But times change because men change, and because civilization, like John Brown's soul, goes ever marching on. The impossibilities of yesterday become the accepted facts of today.