1353. As the Black Death devastates the world, a hidden forest village remains untouched. But when the plague finally bursts through the woods, the superstitious villagers accuse the outcast Mia Hansen of witchcraft. Just as they intend to burn her to make an example of what happens when young women don’t conform to convention, Mia is suddenly taken to Luminesis, where magic flows through the air and creatures long believed to be myth are real. As she uncovers secrets about her own abilities, she also learns that the plague collapsing her old home is the work of the Four Horsemen of the Apocalypse: Conquest, War, Famine, and Pestilence. Once condemned for being herself, Mia now has a chance to prove her worth. But at Cholagus Academy, with hundreds of elite riders competing to face the legendary Horseman, recognition may come at a deadly price.