Prince Yu Qing of Qing single-handedly supported Nangong Fuyao to ascend to the throne, but was expelled on charges of treason. Before he left, he recalled the Demon-Suppressing Sword, and the underground seal immediately loosened, and the monsters were about to emerge. Yu Qing went south to the border to live in seclusion. He met Xiao Li'er, a young man from the Qingyun Sect, and frightened the dragon in the river with a snap of his fingers. The seal of Fuyao Imperial City is in danger, and Taoist Gu, the master of array formation, admits that only Yu Qing can solve the crisis. However, the empress would rather die than bow her head, and secretly sends Xiao Wuchen to eradicate the problem. She still doesn't know what kind of terrifying strength this "waste" whom she abandoned like a pair of shoes has.