After transmigrating into the role of a cannon-fodder character, Lin Lumi plans to be killed by a demon at eighteen so she can return to the real world. She deliberately writes a love letter to tease her nemesis, Mu Heng, but he interrupts her plan, and the letter falls into the emperor's hands. The two are consequently granted an imperial marriage. Lin Lumi travels to Dongling for the Ling Shu examination, earns a perfect score in the written test and is exceptionally admitted. Along the way, she rescues Jiang Yunong, the original story's true heroine, from bullying and effortlessly defeats her opponents in the arena. She joins the Xuanfa Hall of the Gathering Spirit Sect, where she discovers the secret behind the Spirit-Locking Dust within her. To find a treasure capable of removing it, she sets out on an adventure with her sect, spending day and night alongside her betrothed nemesis, Mu Heng. As she follows the original story's main plot, she also unravels the mystery of her own origins.