Lee Gwang Jae is the son of a rich family who is reckless and immature. His father dies and leaves behind large debts. Gwang Jae promises to pay off his debt for his father's honor, but it's not as easy as he thinks. Kim Young Ha supports Gwang Jae with her positive personality and love, giving encouragement to him whenever he needs it.
The story takes place in Seoul, 2011. Lee Yoon-sung is a talented MIT-graduate who's working on the international communications team at the Blue House. He encounters dangerous situations while solving a variety of cases, both big and small, for people who need his help, and eventually becomes a "city hunter."
The old man in the old traditional society was treated in his own way, whether at home or in society, as an adult. These days, however, they have been left out of the limelight due to computer Internet and digital devices, big and small. Even on TV entertainment programs, subtitles appear and most of them stand with bank accounts at bank windows, and no one talks to the elderly at home. (The cell phones are always in their hands, the ears, the MP's in their eyes, the computers) Now the elderly are only accepted as slow, stuffy, stubborn, and useless. The relationship between parents and children is even more so.