Song Ok-suk (55)

Her husband walked out on his family when his business went bankrupt. After he left, she spent 15 years running a hair salon and raising her three daughters alone. Ji-won, her eldest daughter, lived up to Ok-suk's expectations and became a doctor. Ok-suk thinks the world of her. But Ji-won becomes a widow not long after getting married and Ok-suk is worried sick about this. She has had no one to look after her while raising her daughters and has developed a quick and fast temper. She often cuts people off while talking and can even eat her meals standing up. Her best friend these days is her granddaughter. They get a kick out of badmouthing their neighbors.

Im Ha-ryong (60)

After an unexpected bankruptcy, he leaves his wife Ok-suk and his three daughters for 15 years. He has the nerve to suddenly decide to come back, saying that he missed them. He is immature and irresponsible, and is full of talk. He likes to bluff and when it seems that people aren't buying it, slyly changes his story. He likes to cover himself with, "I didn't mean it that way?" and tries to take advantage of any situation. He is the type who wriggles out of hard work, but still gets what he wants.

Im Ji-won (34 / actress Ye Ji-won)

She is a doctor in charge of the obesity clinic below her house. Her husband died not long after her first marriage. She has a young daughter who is in elementary school. She is a good student, logical, and meticulous, but she lacks people skills and is a mama's girl. Ji-won does a 180 and breaks out of her shell after meeting Seong-soo, who is fun-loving and masculine. Until now, she has only gone to the academy her mother picked out, associated with friends that her mother liked, went to the college her mother preferred, and even married the man her mother selected. She goes against her mother's will for the first time after falling in love with Seong-soo, a stuntman. "Mom, I am going to marry this man!"

Im Yeo-jin (26 / actress Choi Yeo-jin)

Ok-suk gave birth to Yeo-jin after drinking herbal tonics that were supposed to help her have a baby boy. This may explain why she is such a tomboy. She had a tough childhood, growing up between an older sister who was a stellar student, and a younger sister who was sly. But she is pretty laid-back and has no hard feelings despite her mother's differential treatment. She was a professional tennis player for a while but had to quit after an injury. Afterwards, she gave up going to college and is working as a nurse's aide at her sister's hospital. She has a crush on Yeong-gwang, her younger sister's friend but would rather die than to tell him about her feelings. She acts even more wildly in front of him. She already has a tough life, but she meets a man of her past that she had never wanted to see again at the hospital. Life just got more complicated.

Im Ba-ni (22)

A typical 20-something girl who is self-centered and likes money. She studies photography. She has to have everything go her way and treats her best friend Yeong-gwang like a slave. She isn't good at anything but hates to lose anyway.

Han Yu-na (11 / actress Lee Yeong-yoo)

Ji-won's daughter. She refuses to wear thermals when she goes outside because they're not fashionable and loves to dress up like a princess. But she dresses like a lazy bum at home.