Princess Wanyan Yun of the Kingdom of Jin, who followed her father Wanyan Liang to conquer the Song Dynasty, was talented, beautiful, brave and good at fighting. As a pioneer officer, she accompanied her father Wan Yanliang to mobilize 150,000 troops and thousands of soldiers. They marched from Kaifeng and headed south with overwhelming momentum until they reached Caishiji at the foot of Ma'an Mountain in Anhui Province. In order to allow the soldiers to cross the river smoothly, Wanyan Yun took a boat in Qingyi and led her maid Qiu Chan. The master and servant dressed up as a scholar and a boy and crossed the river to spy on the enemy. By chance, Yu Yunwen, the inspector of the Jianghuai Army and Ma Mansion, met Yu Yunwen, who was dressed as an elegant scholar in plain clothes and was observing the people's sentiments. The two hit it off, drinking and talking and comparing poems, which led to a beautiful and sad love story.