Han Ji Sook is a single mother who falls in love with a married man. The man, Kang Chul Soo, already has a family with his wife, Yoon Young Hee. When Young Hee finds out about Chul Soo's extramarital affair, she distances herself away from him. Eventually they get divorced and Chul Soo starts a new life with Ji Sook. However, as luck would have it Chul Soo gets into a car accident and loses all of his memories of Ji Sook. Young Hee then has to pretend that she and Chul Soo are still married.

One night Goo Eun Jae got drunk and Jung Gyo Bin took this opportunity to take advantage of her. Eun Jae and Gyo Bin got married but their marriage is not a very blissful marriage. Eun Jae's best friend, Shin Ae Ri, openly flirts with Gyo Bin in front of Eun Jae. Gyo Bin decided that he did not want to remain married to Eun Jae and tried to kill her. Eun Jae was presumed to have drown and died. Gyo Bin thought he was successful in killing Eun Jae and moved on with Ae Ri. Years later, Eun Jae is back for revenge. She pretends to be another woman and appears in front of Gyo Bin's eyes. How will Gyo Bin react to a girl who looks exactly like his presumed dead wife, Eun Jae?

Shin Do Young is an announcer who instigates the jealously of all women around her because of her superior looks, great abilities, and great background. But Do Young has a deep, dark secret. She was actually abandoned at an orphanage when she was young but luckily she was adopted by a nice couple. The couple were unable to have their own children but were surprised when their biological daughter was born. Do Young, afraid that her parents would no longer love her anymore abandoned her 5 year old little sister, Ji Young, at a train station. Years have passed and Do Young meets a joyful girl, Sa Wol, who becomes her personal shopper. What happens when Do Young's terrible misdeed is revealed and that Sa Wol is actually the sister she abandoned at the train station all those years ago?

Min Ki Seo and Lee Young Shim hated the sight of each other at first but later developed affections along the way during their daily fights and disagreements. Min Ki Seo was a doctor who looked down on people and was a haughty person until he met Lee Young Shim and her child who had AIDS. Lee Young Shim was a very cheerful and positive person despite the difficult life she was facing. Through her, Min Ki Seo slowly changed for the better into a warm and caring person.

During their childhood, Dong-ju and Gi-tae are both abandoned by their real parents. In the orphanage, they grow up like brothers and become best friends. Ji-su transfers to the school, where Dong-ju and Gi-tae attended there. But at the same time, they both fall in love with her. While trying to get the ocarina, Dong-ju is caught in the river and is presumed drowned. A Japanese couple adopted him after he was being drowned in the river, Dong Ju became a heir to the corpotate throne. Gi-tae takes Dong-ju's place in Ji-su's affections and later become a couple. Twelve years later, Dong-ju returns to Korea as a Japanese gentleman, but his feelings for Ji-su begin to develop and his friendship with Gi-tae begin to unravel.