Tae-ryeong (Jeong-eun Kim) is studying in France. Her financial difficulties forced her to work part-time to subsidize her living expenses. After being fired by her part-time restaurant owner for being late, Tae-ryeong unexpectedly got a job as a maid in a wealthy family. Tae-ryeong, who had just got a source of income, was forced to leave by her landlord because of her rent arrears. Tae-ryeong had to rely on her friend Liangmei and agreed to watch the stall for Liangmei who was going on a date. Qizhu (Shin-yang Park) who was going to attend the dinner drove by and had a misunderstanding with Tae-ryeong because of her stall. The two later reached an agreement, and Qizhu gave Tae-ryeong an expensive dress and a generous reward. Tae-ryeong accompanied Qizhu to attend today's dinner. Afterwards, Tae-ryeong decided to sell the dress, and by chance, she met Xiuhe (Dong-geon Lee) who bought the dress for her at a high price. Su Hyuk, who is only a few years younger than Ki Joo, is actually his nephew, and Ki Joo is Tae Ling's new part-time boss. Thus, a delicate triangle relationship is formed between Cinderella Tae Ling, the rich boy Ki Joo, and Su Hyuk. In the tangled relationship with the uncle and nephew, Tae Ling gradually understands her own heart, breaks through many obstacles, and pursues her true love. This drama is the fastest-growing TV series in the history of SBS, and it won the single-episode ratings championship in 2004.