The love story of Cha Dong Joo, man who's been rendered deaf after an accident but pretends he can hear, and Bong Woo Ri, a woman who's intelligent but pretends she's dim-witted to protect the dignity of her mentally handicapped father.
The drama follows the story of a man, Choi Suk Bong, who believes that he is actually the son of a rich father and heir to a chaebol group. He meets Lee Shin Mi, who is actually a chaebol heir but acts nothing like one, with her scrimping and frugal ways. Although they get off to a rocky start, with her help, he struggles towards his goal of attaining wealth.
After Seo Haneul (Sung Yuri) lost her mother in a fire, she was later adopted by a wealthy family and experienced a life of many twists and turns. Seo Gun's father had married an unwed mother, thus making Seo Haneul his sister in the eyes of the law. After their parents passed away, Seo Haneul was adopted by a wealthy chairman of a large organization who has also became a gangster. Upon using Haneul to extort money, Seo Gun and Haneul slowly fall in love with each other.