Kang Jun, a prince of a small nation of the East, was taken as a hostage after his country was defeated by the West. There he meets Rosaline, the Queen who held great power and has absolute sovereignty over the country. As Rosaline’s spoils of war, she took him for herself and now lives in her castle.

Determined to rebuild his defeated country, Prince Kang Joon begs to be taken in by the powerful empress of Skaden, Roselin Skadia II. But never did he imagine he'd be her war trophy, spending night after night in her bed! That is until one fateful day when Joon uncovers Roselin's shocking secret. Now that he knows the truth about her, what lies ahead for their relationship... and their kingdoms?