Shen Yunzhao, the legitimate daughter of the Shen family's original wife, is intelligent, transparent, calm and decisive. In order to protect her daughter, her stepmother forced her to marry into the East Palace and become the concubine of the prince Xiao Jinchen. His Royal Highness, the Crown Prince, appears to be uninhibited and cynical, but in reality he values love, justice, courage and strategy. At the beginning, the two agreed that "each should do his own thing" and that the water in the well would not interfere with the water in the river. Unexpectedly, an accident caused him to catch her calmly acting as a director late at night. From then on, the Dandy became sincere and began to quietly support her. And she wanted to be alone, but he was pulled step by step into this chess game called "Dongfeng". When the disguise is torn away, the true heart emerges, and let's see how the smart heroine goes from concubine to crown prince step by step, accompanying him to travel through thousands of miles of mountains and rivers.