The Rude Mechanicals flew from one end of the universe to the other, helping others where they could, generally with the best intentions and the worst results.
On this occasion, the Six Million Dollar Mannequin flew their ship, the I Contain Mechanicals, backwards into three black holes before he realized he had his map upside-down. The Mechanicals were hopelessly lost. They settled on a world called Mundux to get their bearings.
Mundux was a tiny world. You could walk around it in ten steps. The Emperor of the Munds greeted the Mechanicals.