Main characters ;
Lee Seo-jin as Jang Sae-hoon He was raised by his father, and grew up building up great ambitions for success and fame. Then he lost his father to a car accident and started working as a part-time job at a gas station to make his living. His life is a difficult one indeed, but he's a natural born genius, who has never missed a scholarship in school. One day out of the blue, a girl comes storming into his life. Her name is Ji-eun, a girl of a completely different background and character from Sae-hoon's. Knowing just too well of his harsh reality and of what waits for them ahead, he pushes her away. Ji-eun however, is keen to get his heart, and in the end, they get married. But as he expected, their marriage life was not rosy-colored and Ji-eun soon leaves him. After signing divorce papers, he gets on a plane heading for
New York City and a "new life". After a series of all kinds of ups and downs, he accomplishes the "American Dream" and becomes a newly polished person, William Jang. Ten years have passed and he returns to Korea. Maybe it's a twist of their fate...he finds himself standing in front of her once again. But this time, he has someone, Mi-ran beside him. What's even worse, Mi-ran and Ji-eun are friends who studied together in Boston. Ten years ago, he really had nothing to offer her, but he loved her with all of his heart. Can he really let her go? ;
Lee Eun-ju as Lee Ji-eun She has grown up having her way with everything. Her father is a successful CEO of a textile group and her mother is a hopeless and immature lady who only knows her luxurious world. With this background plus her beautiful looks, she's a reckless spoiled little brat. But she's also one lovable and attractive girl. She comes home from Boston for the holidays and as usual, she goes around acting like a spoiled princess. One day, Sae-hoon suddenly comes into her life and she falls for him. But naturally, her parents are not happy about poor orphaned Sae-hoon. Ji-eun doesn't give up and gets pregnant. She leaves her parents and her luxurious life behind and starts her life with Sae-hoon in a tiny room in a rundown neighborhood. But very soon, she wakes up to reality and starts to get tired of her life in destitution. As misery loves company, she has a miscarriage and realizes she can't die for love. She gives a point-blank "no" and leaves Sae-hoon. After their divorce, upon hearing that Sae-hoon is leaving Korea, she drives like crazy to the airport thinking it would be her last chance to get him back. But fate is cruel to her and takes her father away in a car accident when he follows her. With her father's sudden death and the fall of her family, hopeless Ji-eun picks up the phone and calls Sae-hoon who, without knowing her situation, coldly turns her down. Ten years later as a 32 years old divorcée, Ji-eun is a different person. With a manic-depressive mother and a trouble-making sister, she has now become the breadwinner of the family: this is a big change from the once reckless little brat who didn't even know how to turn on the stove. And another love comes knocking on her door. Jung-min is no doubt the perfect prince charming every girl would die for. Again she finds someone whom she desperately wants to get off her mind but whom she just can't forget. Then her ex-husband Sae-hoon turns up in front of her. And a twist of fate makes them meet as client and helper. ;
Jung Hye-young as Yoon Mi-ran Daughter of a rich real estate agent, she grew up wealthy and has a carefree lifestyle, left to her own devices by her doting father. However, despite that she has always felt somewhat inferior to Ji-eun. Without knowing Sae-hoon was once married to Ji-eun, she gets to know Sae-hoon at one Christmas donation party. She also desperately falls for him and decides to make him hers, doing everything possible. She did manage to get Sae-hoon to be with her but this was due to a car accident. The accident makes left her unable to walk and getting around in a wheelchair. Feeling guilty and responsible for the accident, Sae-hoon decides to marry her. Things get more complicated when Mi-ran learns of Sae-hoon's ex-wife. She then becomes more obsessed with Sae-hoon in order not to lose him to her lifetime rival, Ji-eun. She even hides the fact that she can now walk again... ;
Eric Mun as Seo Jung-min He's the prince charming of a huge conglomerate called Seo-Rin Group. He seems to have everything - the colorful background as the heir of Seo-Rin, perfectly good-looking face, gentleman-like manners, talent in every sports. Maybe it could even be said that the word "perfect" is made for this kind of person. When he graduated from a prestigious university in Boston with honors, people were putting highest hopes on him. However, he was not spared from a twisted fate... He can never forget the day when he lost his twin brother. Only if he had not shouted to his brother, "Come on, you can do better than that. Beat me!" He felt guilty about the accident ever since and as a form of self-punishment, he lives the life of a debauchee much to the consternation and fury of his father. Then fate brings him to Ji-eun...
Supporting characters •
Park Geun-hyung as Seo Moon-soo, Jung-min's father • Kim Bin-woo as Lee Young-eun, Ji-eun's younger sister •
Lee Yoo-jin as Nam Bok-ja, Ji-eun's friend •
Lee Kyung-jin as Jo Hyun-sook, Ji-eun's mother •
Kim Byung-se as Kim Ho-jin, Sae-hoon's upperclassman • Han In-soo as Lee Sang-beom, Ji-eun's father • Shim Yang-hong as Mi-ran's father • Kim Boo-seon as Jung-min's stepmother • Kim Dong-hyun as Yeo-jin •
Jeon Su-ji as Jeon-ah • Yoon Sung-hoon as Mi-ran's chauffeur •
Yoon Yoo-sun as Dr. Ahn Ji-young, psychiatrist ==Music==