Li Bi finally makes a breakthrough with the dying Cao Po Yan. His final clue leads them to the Lotus Cross and their leader You Cha. Zhang Xiao Jing and Tan Qi head off undercover in search of a Persian monastery but instead find themselves at a Nestorian church or the Church of the East. Their quest hits a snag as an eager deacon gets in their way. Meanwhile, Wen Ran escapes and regroups with Long Bo. Yu Chang is furious that Long Bo didn't send her on a mission