Seo Young Ji (Han Ji Hye) was from a poor upbringing and worked as hard as she could to better herself. She went to see a plastic surgeon, hoping that by changing her appearance she would have a better future. The surgeon, a beautfiul young woman called Jeong Ah Mi (Song Seon Mi), asked SYJ for a favor. JAM had been set up on a blind date with Kim Jun Woo (Kim Suk Hoon), but she really had no interest in going. So she asked SYJ to go under false pretense. SYJ agreed to help out with the intention to turn the guy off but the blind date was a hit and the two started dating.
Add to the equation Choi Do Kyeong (Kwon Oh Joong), a poor but ambitious social climber, who would do anything to marry rich. He rejected SYJ as she was poor and did his best to go after JAM.
Secret Lovers is the latest K-drama from MBC, which addresses the most important questions of all - is love reason enough to marry someone, or should you be looking for an equal in both social status and knowledge?
徐永芝的夢想是成為一個童話畫家，但她的作品卻不被出版社接受。永芝因常常去家附近的銀行而喜歡上了那裏的職員崔道慶，但道慶因為她的背景而拒絕了她。傷心的永芝到整客醫院想改變自己，她因此而認識了醫生鄭雅美，兩人更成為好朋友。有一次，雅美為了逃避去相親，而叫永芝代她去，怎料，任職美術總監的金俊佑對永芝有好感；另一方面，道慶經永芝介紹而認識了雅美，並喜歡了她……
