- Story setting: The story takes place in the Great Sheng Dynasty. The former Great Chu Dynasty was replaced by Great Sheng, and Gu Chengze, the last surviving heir of the Great Chu royal family, concealed his identity and became Great Sheng's chancellor, wielding immense power at court. Mobei, a powerful nomadic regime bordering Great Sheng, maintains a delicate balance of power with it. At this time, Yelü Zhao, the heir of Mobei, arrives in the capital at the head of a diplomatic delegation. Ostensibly, they have come to pay tribute, but their true intentions are shrouded in mystery. Thus begins a struggle of political intrigue revolving around power, secrets, and national interests.
- Main plot: Gu Chengze deftly handles the various factions at court while concealing his identity as the last surviving heir of the former dynasty. After arriving in the capital, Yelü Zhao deliberately provokes him at a palace banquet, and the two clash for the first time. In their subsequent encounters, they test and use each other, while an intricate emotional bond begins to form between them before either realizes it. As the story unfolds, Gu Chengze's secret origins face the threat of exposure, while Yelü Zhao has his own mission and ambitions. Amid the whirlpool of political intrigue, they must make difficult choices that will shape the future of Great Sheng and Mobei.
