No.1 subscribed live streamer, Woo Sang, specializes in criminal profiling and covering crime-related mystery cases. One day, Woo Sang streams about an unsolved serial murder case and ends up unveiling the truth to some dark secrets through his channel.

Two apathetic police academy recruits who become best buddies through the tough training together witness a woman being abducted right before their very eyes. As they were taught in the academy, they quickly report the incident to the police, but the police are in no hurry to jump on the case. So the duo decide to take the matter into their own hands and rescue the woman.

On the day that underground rapper Hak-soo fails his 7th audition, he receives a call from his hometown that his father is in the hospital. But he finds out that it was his father's plot to bring him to Byeon-san. To top it all, he is suspected as a phishing scam criminal and locked up in this small, boring suburb.