Enter Commander Keen - the alter-ego of an eight year-old genius by the name of William J. "Billy Blaze" Blazkowicz II, grandson of WWII Allied war hero B.J. Blazkowicz of Castle Wolfenstein fame.

When Billy learns that the Earth is in danger, he dons his brother's football helmet and his homemade interstellar spaceship to become Commander Keen - Defender of the Earth!

The Armageddon Machine is the second episode of the Goodbye Galaxy! miniseries.

Keen saves the Keepers of the Oracle, and continues his mission to stop their space station - the Omegamatic, aka the Armageddon Machine! The Oracle taught him that the Shikadi are following the orders of one they know as the "Gannalech". In order to stop them, Keen must destroy the Omegamatic and stop the Gannalech!