In the first year of Xuanhe, at the plum blossom banquet of Su Mansion in Bianjing, 13-year-old Su Yan and his childhood sweetheart Lin Qingyi broke hairpins and made an oath. Under the feast, the Jin soldiers and cavalry have broken through the last barrier of the Liao Kingdom. In the past five years, prosperity has collapsed like a sand tower: Bianjing fell, and Huiqin hunted in the north.