After staying up all night reading a historical romance, Lin Wanxing unexpectedly transmigrates into the novel as Lin Wanxing, a concubine-born daughter of the Grand Tutor and a stand-in for the villain Fu Yunzheng's beloved. The original Lin Wanxing resembled Fu Yunzheng's true love, Shen Qinghuan, in seven ways out of ten. He forcibly brought her to the Prince Regent's residence, where she eventually fell into a lake and drowned in despair. Knowing that Fu Yunzheng is cruel and ruthless and that his story ends in tragedy, Lin Wanxing decides to hide her identity, keep her head down, steer clear of the entanglements between the leads and the villain, and wait for a chance to escape the estate.
But the quiet life of a stand-in is shattered when Shen Qinghuan returns. Lin Wanxing is confined to a remote courtyard and repeatedly harassed and framed. Fu Yunzheng's unexpected protection and Shen Qinghuan's relentless pressure leave her surrounded by danger at every turn. More surprising still, Fu Yunzheng's attitude toward her gradually changes. His initial fixation on her as a “shadow” gives way to something more. Meanwhile, beneath Shen Qinghuan's gentle facade lies a secret plot.
After escaping the estate, Lin Wanxing settles down in a small town south of the Yangtze, only to unexpectedly reunite with Fu Yunzheng when he comes looking for her. By then, Shen Qinghuan's shocking lies have been exposed, and Fu Yunzheng invites Lin Wanxing back to the capital to spend the rest of their lives together. On one side is the peaceful life she's long yearned for; on the other, a dangerous villain who's fallen for her. What will Lin Wanxing choose? Can she change her and Fu Yunzheng's tragic fates and find a place to belong amid power struggles, love, and hatred?