A heavy dart from the Mighty Escort Agency is stolen, and Fang Chong asks Wang Hu for help. The young girl Hong Xueer is ordered by her mother to find the dart. Undercurrents surge in Chang'an, martial arts heroes are inexplicably poisoned, and a puppet monarch suddenly appears at the Junshan life-seeking meeting. Hong Xueer broke into the stone house at the bottom of the lake and encountered the hidden divine sword Long Fei. After investigating at every level, she uncovered the disguises of the four young masters and the four generals. The culprit behind the scenes was Mrs. Hong, and the real culprit was the chief escort officer Fang Chong.
