Su Rongyun makes a deal with her legitimate younger sister. By day, she is a penniless dependent staying with the Pei family. By night, she conceals her face and changes her voice, taking her sister’s place in a passionate affair with the Pei family’s prized son, Pei Zhuoxie. She keeps her day and night lives strictly separate and never crosses the line. At first, Pei Zhuoxie thinks she is shameless and up to no good, and that even her stay in the Pei home is an insult to the family’s reputation. But at some point, his gaze toward her begins to change. Even when he discovers the secret between her and her sister, he says nothing. Until...