Qin Luoyan, a weapons designer, transmigrates into the body of the second daughter of General Qin's family in the Kingdom of Nanyue. She faces the predicament of her family forcing her to marry an old man, so she plans to use the notorious reputation of Prince Xuanwu, Fu Zimo, who frequently visits brothels, to escape the marriage. Unexpectedly, Fu Zimo falls deeply in love with her and relentlessly pursues her. Although Fu Zimo makes an exception for her, his arrogant nature and stubborn refusal to speak plainly lead the governess tasked with teaching Qin Luoyan proper etiquette to be mistaken for someone abusing her. Both are strong-willed, and their conflicting emotions, family obligations, and ideals repeatedly bring them into clashes and struggles, as affection quietly blossoms amid their entanglements.