The Longest Day in Chang'an

Operatives of Wolf Squad make plans to strike Chang'an city on the eve of the Lantern Festival; Li Bi is given orders to apprehend them.

Cui Qi discloses Li Bi's true motive to Zhang Xiaojing; Tugelu takes a boy hostage, claiming to have the map of Chang'an.

Mayor Ji Wen learns of the Crown Prince's wrongdoings; Lin Jiulang wants to do whatever possible to remove the prince as heir to the throne.

Yu Chang gives Long Bo a map he stole off Tugelu; Zhang Xiaojing visits someone knowledgeable in brothels.

Zhang Xiaojing wants Ge Lao's assistance in the investigation, but Ge Lao demands he hand over the mole; Zhang Xiaojing loses the support of all mercenaries.