Na Young Ja (Park Min Ji) is the youngest daughter in the family with a bright and positive personality. One day, Her father suddenly get some problem and to support her family, Young Ja decided to get a job in a department store as a sales person. She then falls in love with Ha Sung Jae (Kim Jung Hoon) who is the head of planning & evaluation team there. Sung Jae stay alone after the death of his wife and daughter.