A hidden love affair in the early Ming Dynasty. The heroine met King Zhu Di of Yan and Emperor Jianwen, and finally decided to help Zhu Di ascend the throne as emperor. After the world was at peace, the heroine drifted away and traveled around the world. Zhu Di did not hesitate to devote all his country's efforts to sending Zheng He to the Western Seas seven times, but in the end they all failed, and he regretted it for the rest of his life.