The martial arts epic set in Chang'an in the Tang Dynasty centers around Li Hanyi, a young swordsman whose life experience remains a mystery. He stepped into the imperial capital with his master's sword "Gushuang". Because of his swordsmanship, he was involved in the "unsolved case of Qingxu Guan's family destruction" that shocked the world three years ago. However, he discovered that the truth he was pursuing involved the seizure of heirs in the court, the reorganization of the world's forces, and a shocking conspiracy that spanned twenty years.
"A Gushuang sword, a bloody plum case, and a young man in the mist of Chang'an in the prosperous age, cut off a shocking chess game that involved the world."