Austlit

'Shale is dying. The vast, boiling maelstrom known only as the Roil has pushed humanity to the edge of extinction. The last cities teeter on the edge of collapse. There is one hope, but it is enshrined in a decadant wastrel who does not want his destiny, and a young woman who seeks only an end to everything. And yet they go on, in search of the ancient weapons that worked against the Roil once, and must work again.' (Publisher's blurb)