Applying a modern twist to the classic fairy tale, the 2010 KBS drama Cinderella's Sister follows the contentious relationship between two stepsisters as their lives and loves intertwine. Tamra Island heroine Seo Woo is the Cinderella, while Korea's little sister Moon Geun Young grows up into the role of the older "evil stepsister". The two petite actresses deliver big performances as reluctant sisters whose polar personalities and love-hate relationship bring them through many ups and downs from adolescence to adulthood. Making his post-army comeback, Chun Jeong Myung adds to the angst and rivalry as the man they both love. Cinderella's Sister also co-stars veterans Lee Mi Sook and Kim Gab Soo, and 2PM's Ok Taec Yeon in his acting debut.
Since a young age, Eun Jo (Moon Geun Young : Painter of the wind, Innocent Steps) 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-grubbing mother (Lee Mi Sook), Eun Jo doesn't know what to make of her mother's latest catch Dae Sung (Kim Gab 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 Jeong Myung), the first person to see past her tough act, and it is his betrayal that will hurt the most. 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.