Detective Hae Young of the Mystery Investigation Team is a heretic in the police force who is full of dissatisfaction and distrust. In order to make ends meet, Haiying wasted his talents on investigating privacy matters and then selling them to the media, until an old radio that was more than 10 years old rang. And detective Li Han, who was active in the police industry in the 1980s, was an upright man who didn't know how to be clever and could only move forward. Li Han used a wireless phone to contact Hae Young and began to solve the unsolved incidents in the past.
Purpose: Detective