On an abandoned road in the countryside, Wei Wuxian and Lan Wangji come across a stone plaque with the inscription "Yi City". In their quest to uncover the mystery behind the cursed severed arm, they venture into the abandoned city in search of new leads.

However, their investigation takes a dangerous turn with the arrival of a mysterious cultivator, leading Wei Wuxian and Lan Wangji to a plot that could threaten the entire cultivation world. The situation becomes even more critical when they discover that the Chief Cultivator of the renowned Lanling Jin Sect, Jin Guangyao, is involved.

As Wei Wuxian and Lan Wangji delve deeper into the conspiracies of the cultivation world, their friends and allies begin to question their motives. With the world turning against him, Wei Wuxian must clear his name and prove he is not the demonic sorcerer people believe him to be. He must regain their trust and stop the sinister evil from destroying the cultivation world.