Cinderella's Stepsister

Ever since she was young, Eun-jo (Moon Geun-young) has learned to trust no one and live strong on her own. Used to being dragged from one broken home to another by her manipulative, money-grabbing mother (Lee Mi-sook), Eun-jo doesn't know what to make of her mother's latest catch Dae-sung (Kim Kap-soo), the solemn head of a traditional rice wine brewery. Both Dae-sung and his daughter, bubbly spoiled princess Hyo-sun (Seo Woo), warmly welcome wary young Eun-jo into their sprawling home, and treat her with a kindness that she simply can't stomach. Instead, she forms a bond with brewery staff Ki-hoon (Chun Jung-myung), the first person to see past her tough act, and it is his betrayal that will hurt the most. However, Dae-sung's genuine kindness to her eventually melts Eun-jo's defenses, and she learns to trust and love her stepfather. Naive Hyo-sun, meanwhile, stubbornly seeks affection at every turn, only to slowly realize she's losing Ki-hoon and everything else in her life to her cold stepsister. Eight years later, Jung-woo (Ok Taecyeon) reappears in Eun-jo's life, a boy she used to treat as her little brother who is now a young man determined to win her heart. Reluctant sisters Eun-jo and Hyo-sun both experience angst and rivalry, as their polar-opposite personalities and love-hate relationship bring them through many ups and downs from adolescence to adulthood.

• Moon Geun-young as Song Eun-jo/Goo Eun-jo^[7][8][9] - A cynical and shy young woman, Eun-jo is good at hiding her emotions and does not get attached to people easily. She is skeptical of her stepfather's kindness; however, she later realizes that it is genuine and this realization begins to break her hard exterior. Eun-jo is in love with Ki-hoon, and is hurt when he leaves, leading her to be cold and reject him when he returns 8 years later. She later mourns her stepfather's death.
• Seo Woo as Goo Hyo-sun - A gentle and brilliant girl who has been treated like a princess her entire life. However, she is lonely and becomes excited when she learns that she'll be getting a new mother and sister. When her new family members are different from what she expected, it takes a toll on her. Hyo-sun is slightly spoiled and becomes jealous of her new stepsister.
• Chun Jung-myung as Hong Ki-hoon - Gentle, handsome, and kind, Ki-hoon sees much of himself in Eun-jo. However, when his difficult and broken family situation causes him to leave the winery, he disappears, leaving Eun-jo a letter that she never receives. Ki-hoon returns 8 years later and appears to be a spy for his evil step-family's company, but not everything is as it seems.
• Ok Taec-yeon as Han Jung-woo^[10][11] - Jung-woo is the adopted son of one of Song Kang-sook's ex-lovers. Eun-jo is the first person to care for him when he was a child, which creates a deep affection in him. Jung-woo finds Eun-jo at the winery 8 years later in order to be near her and declare his love for her. Jung-woo is selfless, reliable and always cares for Eun-jo.
  • Moon Suk-hwan as young Han Jung-woo
• Lee Mi-sook as Song Kang-sook^[12] - Eun-jo's mother. Knows how to get what she wants, and marries Go Dae-sung for his wealth. Though initially an evil stepmother who fakes affection for her new family, Kang-sook does love her daughter Eun-jo in her own way and begins to change as a result of Dae-sung's love for her.
• Kim Kap-soo as Goo Dae-sung - Hyo-sun's father and Eun-jo's stepfather. Dae-sung is kindhearted, genuine, and loving. His character and goodness causes changes in everyone around him for the better.
• Kang Sung-jin as Yang Hae-jin
• Choi Il-hwa as Chairman Hong
• Yeon Woo-jin as Dong-soo
• Go Se-won as Hong Ki-jung, Ki-hoon's manipulative and calculating older half-brother, who does not even acknowledge Ki-hoon as his brother.
• Seo Hyun-chul as Kang-sook's true love
• Kim Chung as Ki-hoon's stepmother

1. 너 아니면 안돼 (It Has To Be You) - Yesung of Super Junior
2. 불러본다 (Calling Out) - Luna and Krystal of f(x)
3. 스마일 어게인 - Lee Yoon-jong
4. 너 였다고 - JM
5. 내 사랑을 구해줘! - Pink Toniq
6. 신데렐라언니
7. 미소지으면
8. 보사노바
9. 그때 그 자리에
10. 사랑한다면
11. 뒷동산
12. 마이너 왈츠
13. 느리게 걷기
14. 후회
15. 모정
16. 내 사랑을 구해줘! (Rock version) - Pink Toniq

A Chinese remake of Cinderella's Stepsister, called Symphony of Fate, was produced in 2011.