It's Princess Mayra's birthday, and she's reclaimed her family's secret weapons, but she can't bring herself to celebrate, Not while Rathen is captured. Jossian's crew hatches a plan with have Jacques infiltrate the mad king's castle—a dangerous job indeed. At the same time, Mayra finds herself spending more and more time with Jossian, a man who used to clash with her.

Hunted King concludes the steampunk story of Whispers of Steam.