One small step. That had been taken before . . .

The year is 1909. Bankrupt businessman Julius Bedford is going nowhere – until he meets the eccentric scientist Professor Cavor. Because Cavor has invented an extraordinary substance. Anything it touches becomes lighter than air! Together, the two men devise a wild scheme. Why not go to the Moon?

But the lifeless world isn't quite as dead as it seems.
Soon Bedford and Cavor are pitched into a thrilling struggle deep beneath the Moon's surface and an encounter with its terrifying alien masters – the Selenites!