Wen Qiao transmigrates into a book, but a System malfunction from the start turns her into the vicious female supporting character of a historical romance. She unexpectedly marries Qi Yan and is given a mission to play the villain: she pretends to mistreat him, punishes him, and acts like a domineering, cruel wife. But whenever she sees his body covered in old scars, her heart softens. She secretly shows him kindness, hiding all her tenderness behind a sharp tongue. She has no idea that Qi Yan is the crown prince. He has already regained his memories and seen through every one of her disguises. Willingly playing along, he indulges and favors her while secretly gathering evidence of the chancellor’s treason. As they spend day after day together, Wen Qiao breaks free of the System’s script and falls for him in earnest. Later, Qi Yan leads an imperial expedition, and Wen Qiao accompanies the army. She steps outside the predetermined plot and follows her heart toward love. Once peace returns and the System disappears, the emperor offers her an empire as vast as the land itself and vows to stand by her for all their years to come.