Lee Jeong-dae

A man has the intelligence of a 7-year-old due to an accident. Han Yoo Jung is a woman with a bright and positive personality. She aspired to become an announcer, but her poor family background made her give up on her dream. She now works hard to support her family. She also lives in atonement for her fraternal twin sister's wrongdoings.

Jung Gyul Wool loses her vision and ability to walk because of her materialistic husband and his mistress. Despite her shortcomings, she hatches a plot to seek revenge.

Set in the 1960's and 1970's. Soo-In is a smart student who has never missed ranking at the top of her class. Due to her poor family situation, she begins to work at a factory instead of going to college. Nevertheless, she pursues her dream.

Hong Se Yeon works as a personal shopper. She is outgoing and a positive person, but she is betrayed by people whom she loved. She begins to take revenge on those who betrayed her. Meanwhile, Eun Kyung Hye is the only child of a CEO. Her life looks perfect, but she has a fear that she will get abandoned. Because of her fear, she has an impulse control disorder and gets compulsive.