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."
Ji-hyeon is enjoying her life after a female sex-change operation. One day a boy knocks on her door claiming that she is his father. Her attempts to act like an ordinary father conflicts with her life as a woman.
A financially desperate salaryman teams up with his friend to kidnap a rich girl to make a quick buck. But then he gets a call and learns that his own daughter has been kidnapped as well.
