The owner of a private detective business, Ji Hyeon-su, gets every request done 100% of the time. One day, at a remote motel trying to recover a missing dog, Hyeon-su gets ambushed by a mysterious attacker and blacks out. When Hyeon-su wakes up, he is now a suspect in a kidnapping case. Being transported after getting arrested, the car Hyeon-su is in gets capsized, and Hyeon-su who gets mistaken for a prosecutor starts the investigation to find his client, impersonating the prosecutor. While working on the kidnapping case, he finds out that tycoon Kwon Do-hoon is involved. Will he be able to catch the owner of one of Koreas biggest law firm?