To search for the treasure of the ancient Loulan kingdom, Lan Wan led a scientific expedition team into the desert, unexpectedly suffering betrayal from her best friend and boyfriend, and dying a tragic death in the cave of the Cobra King. Reborn into a new life, Lan Wan decided to change her fate, not expecting that other team members, under the instigation of best friend Li Xingyao, would insist that Lan Wan was the spy of the Cobra King. Facing everyone's doubts, Lan Wan and Fang Haonian joined hands to jointly explore the Loulan ruins full of conspiracies, searching for the truth of the ancient city beneath the yellow sand.