The first in a page-turning young adult series perfect for fans of Victoria Aveyard's Red Queen and S.J. Maas's Throne of Glass, set in world where flame and ice are mortal enemies - but together create a power that could change everything.
In a land governed by the cruel Frostblood ruling class, seventeen-year-old Ruby is a Fireblood who has spent most of her life hiding her ability to manipulate heat and light - until the day the soldiers come to raid her village and kill her mother. Ruby vows revenge on the tyrannous Frost King responsible for the massacre of her people.
But Ruby's powers are unpredictable... and so are the feelings she has for Arcus, the scarred, mysterious Frostblood warrior who shares her goal to kill the Frost King, albeit for his own reasons. When Ruby is captured by the Frost King's men, she's taken right into the heart of the enemy. Now she only has one chance to destroy the maniacal ruler who took everything from her - and in doing so, she must unleash the powers she's spent her whole life withholding.