The story is about the confrontation between the task force police investigating the 1% missing case and the vicious criminal suspect. The genius elite detective Gil Soo-hyun (Kim Kang-woo) from the FBI and the 100% pure local veteran detective Oh Dae-young (Park Hee-soon) will find the missing person within a certain period of time and fight against the unprecedented vicious criminals. With the theme of "missing", it will not only depict the process of finding the missing person, but also a journey to find the justice and values lost in society. It is a crime drama with a brand new theme.