The Great Di Kingdom was founded by the Baili clan. It coexists with the Lang clan across the mountains and is constantly fighting against each other. The Emperor of Di and the Crown Prince died one after another, and the youngest son of the Emperor of Di, Baili Haohe, succeeded to the throne. Haohe was still young at the time, so his mother, He, assisted in the administration. Although the late Crown Prince's sons, Baili Hongxuan and Baili Hongshuo, were loyal to the young emperor, and Baili Hongxuan had repeatedly won military exploits to protect the people of Di. However, the Queen Mother He was instigated by flatterers and still feared the two brothers of the Baili clan. Although the young emperor trusted the two brothers and wanted to help them, he was also unable to do so. Ming Yefeng, the new leader of the Lang clan, discovered the true identity of Baili Hongyi, the daughter of King Pingyuan. The mystery of Hongyi's life pushed the Baili clan into the abyss. At this time, a mysterious person discovered that there were disturbing signs in Yecheng, the imperial capital of the Di Kingdom, so he secretly made a plan, hoping to gather strength to protect the people of the world.