With the Engineers Order's approval and an unexpected addition to the team to help them, airship engineer Jasper Kendall Asher and aeronaut Ivy Blackwell are ready to see their airship come to life. Or so they think - until a series of unsettling newspaper articles make their workers quit one by one. To make matters worse, a powerful contender for the title of England's representative to the Engineers World Gathering not only challenges their project, but also throws Ivy and her airship into an unwanted race against time from London to the Australian colonies and back. When unforeseen events change the journey's course, relationships and loyalties are put to test. With scarce resources and only a few months left until the most anticipated engineering event in the world, Jasper must find a way to protect his work and his place at the Gathering. Opening a case with Her Majesty's Office of Classified Affairs seems a good idea for this purpose. So long as he follows the right trail...