Dae-gil has been skilled with his hands and has shown a strong desire for winning ever since he was a child. He will succeed his uncle and jump into the world of Tazza, risking his life in competition.

A doctor tries to woo a grieving, widowed firefighter in her attempt to get him to testify on her behalf in a medical malpractice case.

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."