Among the Burning Flowers by Samantha Shannon

A standalone from the world of the global bestselling fantasy phenomenon THE PRIORY OF THE ORANGE TREE.
 
With the awakening of fire-breathing dragons, Among the Burning Flowers sees the first sparks of danger that threaten to consume the world in The Priory of the Orange Tree. Take your first steps into the epic. Yscalin, land of sunshine and lavender, will soon be ablaze.

It has been centuries since the Draconic Army took wing, almost extinguishing humankind. Marosa Vetalda is a prisoner in her own home, controlled by her cold father, King Sigoso. Over the mountains, her betrothed, Aubrecht Lievelyn, rules Mentendon in all but name.

Together, they intend to usher in a better world. A better world seems impossibly distant to Estina Melaugo, who hunts the Draconic beasts that have slept across the world for centuries. And now the great wyrm Fýredel is stirring, and Yscalin will be the first to fall ...

A story of human resilience in the face of dire circumstances, Among the Burning Flowers leads readers through the gripping and tragic events that pave the way for the opening of the million-copy bestseller The Priory of The Orange Tree.