The Brokenwood Aeronauts, a group of Steampunk enthusiasts, are having their annual convivial in a barn that has been kitted out with all manner of rustic Victorian bric-a-brac.
Joyous news is in the air when a local festival to celebrate their sub-culture is announced. But not long after, body parts are in the air, too, when an explosion kills one of their members — Lionel Bridges.
Mike and his team are taken into a world of dress-up and escapism where all the suspects have alter-egos; the perfect place to hide a motive, evidence or a weapon. Was Lionel the victim of revenge, jealousy or simply an unfortunate accident?