In a world torn apart by endless war, the last surviving knight of Westbank makes a desperate Heavenly Vow on a blood-soaked battlefield: revenge at any cost. Kaine Magnus rises from the mud, finds unexpected warmth in the arms of a gentle farm girl named Enid, but ultimately walks away to fulfill his oath. Victorious yet broken, he dies alone on a distant hill, his body turning to dust as Enid remains unaware, still waiting for the man who chose duty over love.

in the frozen north of the Great Frika Empire, Tsuma Hoseogrey a silent blade raised by her lost brother is sent south as a spy. Wounded and fleeing, she is saved by a high-ranking officer from the enemy empire. As forbidden feelings bloom between them in stolen, tender moments, the North Star watches overhead.
But empires do not forgive. When her true identity is revealed, love and duty collide in a deadly duel where only one can survive.