My Heart Twinkle Twinkle

"Jinshim Original Fried Chicken restaurant is owned by Lee Jin-sam, who has three daughters Lee Soon-jin, Lee Soon-soo and Lee Soon-jung. Since their mother's death, eldest daughter Soon-jin has been running the restaurant and taking care of her father and younger sisters. She struggles to keep Jinshim afloat against its rival restaurant Woontak Chicken, which is managed by the ruthless Chun Woon-tak. Middle daughter Soon-soo is a pianist, but becomes heartbroken when her boyfriend breaks up with because of her poor background. Youngest daughter Soon-jung finds herself caught in love triangle between two men, Jang Soon-chul and Cha Do-hoon."