Lin Xiaomei, a key member of the modern archaeological world, touches a mysterious jade pendant during an excavation and unexpectedly transmigrates into the silly, legitimate daughter of the Chancellor's household in the Da Yao Dynasty, Su Qingwan. She also becomes the intended bride of the aloof Third Prince Xiao Jingtian, who wants nothing to do with her. Abandoned on her wedding day, she moves into the secluded Xianyun Courtyard. She plans to lie flat, pursue archaeology in ancient times, and while away her days, but her knack for appraising treasures and identifying antiquities unexpectedly lets her deliver a face-slapping comeback to the servants who look down on her, solve the strange occurrences in the prince's estate, and gradually melt Xiao Jingtian's icy heart.
From utter disdain to falling for her step by step, the aloof prince embarks on a clumsy pursuit of his wife. The two join forces to foil palace schemes and uncover the secret behind the jade pendant and the bond that spans a thousand years. When the choice between returning home and staying with her beloved is placed before her, she ultimately chooses to remain by his side. She transforms from a would-be empress confined to the cold palace into an empress cherished by the emperor for a lifetime, composing a fantastical, sweet cross-time love song.
