Ling Yue comes from a modern family of archaeologists. Brilliant and exceptionally skilled in combat, she is an expert in history, martial arts, and medicine, yet she has never been able to unravel the mysteries of her parents' disappearance or her family's ancient book, the Record of the Nine Provinces Star Map. One day, she accidentally awakens the mysterious power within the map and is swept into a time vortex, transmigrating to the ancient Great Yong Dynasty.
She lands in the wilderness, dressed in modern clothes and carrying a multifunctional military knife, only to be hunted down and left on the brink of death. At the last moment, she is rescued by Xie Yan, the mysterious leader of the White Night Pavilion. Intrigued by her uniqueness, Xie Yan brings her back to the pavilion, launching Ling Yue's adventures in the ancient world. She uses her modern knowledge to establish herself in the White Night Pavilion and matches wits with Xie Yan. Meanwhile, her research into the star map makes its first breakthrough, revealing a close connection to the legend of the “Five Directional Heavenly Emperors” of Great Yong.
After leaving the White Night Pavilion, Ling Yue meets Shen Yan, the gentle and refined Marquis of Wenyuan; Xiao Che, the seventh prince, who seems carefree but is secretly ambitious; Huo Lin, the proud and battle-hardened general who guards the north; and Yun Shu, a reclusive physician, cool and otherworldly. Each has his own agenda, yet all are drawn to Ling Yue's unique charm. In their company, she experiences different kinds of warmth and connection.
Meanwhile, Crown Prince Xiao Jing and Empress Liang regard Ling Yue as a thorn in their side, believing she is a “witch” who is disrupting the affairs of Great Yong. They repeatedly plot against her, plunging her into danger. Gu Yan, a transmigrator from the modern world, is also secretly making plans to claim the power of the star map for himself, determined to seize it and kill Ling Yue.
On one side is the mysterious star map; on the other are five male leads, each with a distinct personality, along with the rival forces fighting behind the scenes.
