A long time ago, there was a beautiful and mysterious country, which had an equally beautiful name: Yun Country. Among the many kingdoms, the Yun Kingdom is not the largest, most populous, and richest in resources, but no country's leader has the courage to target the Yun Kingdom. The Yun Kingdom belongs to both the royal family and the world. Kings and princes of all generations will practice martial arts. Many of them are very skilled and occupy a place in the world. The unpredictable formations of Yun State and the easy-to-defend but difficult-to-attack terrain make Yun State far away from the disturbances of other countries. The princes of the Yun Kingdom are all sentimental seeds with different personalities. Many stories happened to them. The most beautiful second princess of the Yun Kingdom and the unrecognized prince Xiting Xiaoyu of the Imperial Capital are the most enviable but the most painful couple. The turmoil among the three kingdoms of the Imperial Capital, Yun Kingdom, and Xichen, and the love between them.