Yi'enna, the female God of War of the Hui Crystal Empire, is ambushed by her adopted younger sister. Using reincarnation magic, she is reborn as Aisilin, the fiancée of Lei'ensi, the eldest prince of an enemy nation. Lying low in the imperial palace, she stirs up political intrigue and gradually joins forces with the eldest prince, moving from mutual probing to a powerful alliance. Together, they rally pirates and beastfolk companions to complete their revenge and unite the wasteland. Later, they face a foreign queen, forge alliances among multiple nations, and embark with their companions on an adventure across continents.