Four siblings. One throne. No way out.

All Petre Mercy wanted was a dramatic exit from his life as a prince. It’s been five years since he fled home on a cyborg horse. But now the King, his Dad, is dead, and Petre must decide which heir to pledge his thyroid-powered sword to.

As the youngest in a set of royal quadruplets, Petre’s all too aware that the line of succession is murky. His family stands at the knife’s edge of civil war. Each of his siblings have designs on the crown—and each of them want him to pick their side.

Before he knows it, Petre’s plunged himself into a web of intrigue and a world of strange, unnatural inventions, where any mistake could be the spark that ignites a war.

Family reunions can be a special form of torture.