Detective Baek Hong Suk (Son Hyun Joo) is A father and a detective, he loses his daughter to a hit and run accident and loses his wife in the shock as well, so he sets out to find out the truth and stands against the center of authority

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.