It was created by writer Ian Edginton and artist I. N. J. Culbard and is published in the British comics anthology 2000 AD, where it first appeared in 2012.

Wren, the young protagonist, undertakes a quest to restart the dying brass sun at the centre of a gigantic mechanical solar system containing dozens of worlds and moons, all connected via colossal spars.

[2] The Diamond Age, Floating Worlds and Engine Summer likely reference classic science fiction novels of the same name, by Neal Stephenson, Cecelia Holland and John Crowley, respectively.

Motor Head likely references the well-known British rock band Motörhead.

In 2014, the first three storylines were published by Rebellion as a six-issue limited series from May to October.