Two years after the Great War, Europe has divided itself once more, and Deryn and Alek are tasked with the unthinkable: suppressing a Darwinist rebellion in a Clanker-controlled nation. Their world of black-and-white turns grey as they fight against everything they hold dear. Isolated from each other and surrounded by former enemies, who can they trust?

An Airborn/Boundless crossover. While waiting to pick up Kate from a train station, Matt bumps into a certain someone still reeling from his own recent adventures. Whether they are locked onto tracks or floating in the sky, there is always a middle ground for unlikely heroes to meet.

When the Leviathan arrives in Istanbul to secure a defecting German scientist, Newkirk finds himself caught in a web of political intrigue and revolution. With Alek and Deryn no longer around to help him, he is forced to confront not only Clankers, but his own doubts and weaknesses as well.

During an arena match, the BLU Spy's entire team is wiped out within moments of it beginning. Facing impossible odds, he turns to a different means by which to eliminate the REDs looking for him.