Cinderella and Four Knights (Hangul: 신데렐라와 네 명의 기사; hanja: 灰姑娘与四位騎士; RR: Sinderellawa Ne Myeongui Gisa) is a South Korean television series aired on August 12, 2016 starring Park So-dam, Jung Il-woo, Ahn Jae-hyun and Lee Jung-shin, about passionate young people in their 20s who happen to live together. It is similar to Boys over Flowers and it is based on the novel with the same title, published in 2011.
Eun Ha-won (Park So-dam) is a high school student who dreams to be a teacher, but she needs money for her education. One day, she helps a mysterious old man. Later on, She ends up living in a mansion, Sky House, with three third-generation chaebol cousins under some conditions.
Kang Hyun-min (Ahn Jae-hyun) is a playboy plutocrat who does whatever he wants while Kang Ji-woon (Jung Il-woo) is soft hearted but lonely and wild-child rebel who rises in status to a member of the royal family in the Sky House. The third cousin, Kang Seo-woo (Lee Jung-shin), is a top singer-songwriter who is gentle and kind to Ha-won. And finally Lee Yoon Sung (Choi Min) is Chairman’s secretary and their bodyguard.