In the midwinter of the 22nd year of Tianqi in the Helan Dynasty, the battle between the seventh prince Helan Mingxuan and the ninth prince Helan Mingjian finally surfaced. Xie Jingyang, the left prime minister who was forced to get involved in the dispute between the two kings because of a promise, called back his youngest son Xie Qingping. Returning with Xie Qingping was his childhood sweetheart Su Yunxing. The moment he saw Xie Qingping, Helan Mingjian was captivated by his breeze-like smile. And Su Yuexing's existence aroused jealousy and hostility that he had never experienced before. By chance, he learned that Su Yunxing was an adviser to the Seventh Prince. In the battle to seize the progeny, where will the entangled love entanglements of the three go?