The drama portrays affection and conflict between a mother (Kim Hee Ae) and her only daughter (Go Ah Ra). Kim Ki Bum, a member of the idol group Super Junior,will play the role of the boyfriend of Go's character.

Kim Hee Ae (the mom): was a poor but smart woman, and when she was younger she met Lee Jae Ryong's character and they fell in love. They got married and she had a daughter. She later finds out that her husband has a wife and two children back in Japan. So, she divorces him and has custody of her daughter. Later, she becomes a writer of a best seller novel and achieves a lot of fame and wealth. Because she's so busy, her mother takes care of her daughter, and the daughter feels closer to her grandmother rather than her own mother. The mom has a boyfriend who is a romanticist, and though they're going out, he doesn't want to get married and she's fine with that. Suddenly, her kind and obedient daughter turns against her and they begin to form a sort of rivalry/war.

Go Ara (the daughter): She forgets about her father and cannot even recall what his face looked like, but one day, she accidentally interferes with a phone call from him that was meant for her mother. She's shocked because her mother lied about what truly happened to her father, and becomes angry at her mother. She gives up college and for no reason, decides she's going to become an actress. By chance, she's casted in a movie that is based on her mother's bestseller. To anger her mother, she goes out with her boss, Han In Chan (Kibum's half brother) and becomes the queen of scandals. When she goes to see her father, she is disappointed to see him so well off, unable to understand his reason for not being there as she was growing up.

Lee Jae Ryong (the dad): Married Kim Hee Ae and had a daughter, Go Ara. Got divorced once she found out he had another wife and children. Was unable to see Go Ara until she was older because the mother cut off all contact with him. Is shocked when Ara comes to Japan to see him without notice.

In Chan (kibum's half brother and ara's boss): inherited his father's movie business. A player. Uses Ara as revenge for some SooJin girl.

Kibum (Young Chan-- Ara's sunbae): a photographer. Tough guy. Decided to follow his own path of life rather than follow the family business. Likes Ara, but when his confession to Ara turns away, Ara begins to see Kibum as annoying. Ara thinks he only likes her due to the rivalry he has with his brother, so she does not like him. But even still, Kibum still sticks by her and loves her.