Lu Zhaoye burned his adoptive father's relics with his own hands. The firelight reflected the cold light in his eyes, but ignited the fear of the entire underground council - the pile of ashes contained the "blood key" that could overturn the power of the Seven Kingdoms. No one knew why he burned, but when he turned to leave, Wen Xuyan stood at the alley, holding half of the unburned secret letter between his fingertips, and chuckled: "You finally admit it, brother." The assassins of the underground council, the intelligence network, and the underground warlords were all waiting for an answer: Is Lu Zhaoye a traitor or a real priest? And Wen Xuyan, is it the knife that he buried in the darkness with his own hands, or... The knife that he had already pulled out for him?