Xiao Meng comes from a complicated family. Her father's affair led to her mother's depression and eventual death. Her stepmother and half-sister, Xiao You, constantly make things difficult for her. Despite these hardships, Xiao Meng becomes a well-known fashion designer through hard work. To help support her aunt who raised her, Xiao Meng agrees to take her place as a maid in Gu Nan Cheng's house, unaware that Gu Nan Cheng is her online friend, "Gentleman Under the Moon," whom she has known for three years. Gu Nan Cheng has already developed feelings for Xiao Meng and secretly helps her overcome challenges at work and in life. Xiao You repeatedly tries to sabotage Xiao Meng, but Gu Nan Cheng always steps in to resolve the situations. In the end, Gu Nan Cheng confesses his love and proposes to Xiao Meng, and the two are united, while Xiao You's schemes are exposed.