The Secret Treasures of Jingling tells the story of Lin Yu, who is fascinated by ancient culture. After finding an old book about a mysterious ancient tomb on an antiques street, he sets out to find it. Deep in a mountain valley, he and a group of tomb raiders discover the tomb entrance one after another. Inside, they face a maze of mechanisms: spikes, traps, and flames block their way at every turn. Following clues in the old book, Lin Yu struggles onward and reaches a secret chamber containing a huge coffin.
The tomb raiders arrive, hoping to open the coffin and seize its treasures, but they unleash a terrifying monster guarding the tomb. It slaughters them in an instant. At the critical moment, an old man in white, the tomb's guardian, appears. Waving a whisk and chanting an incantation, he seals the monster away again. The old man tells Lin Yu that an ancient emperor built the tomb to suppress an evil entity. Beneath the coffin lies a secret chamber containing a mysterious artifact capable of changing space and time. Its power is immense, and if it fell into the wrong hands, it would bring disaster.
Though curious about the artifact, Lin Yu understands the stakes and chooses to leave. After returning to his ordinary life, he discovers, while sorting through his old books, a text written by a descendant of the emperor that details the tomb and the artifact's origins and purpose. Knowing the danger of letting the secret get out, he decides to keep the book safe and continue protecting the secrets of history.