A university professor teaches a documentary filmmaking class. One day, he receives disturbing news: several workers featured in a documentary he made years ago have been unjustly dismissed—simply for appearing in the film.

The 'Beast Cop' Ma Seok-do heads to a foreign country to extradite a suspect, but soon after his arrival, he discovers additional murder cases and hears about a vicious killer who has been committing crimes against tourists for several years.

Jae-ho, who aims to become the number one in a crime organization, gets to build up trust with Hyun-su, an ambitious newbie in the prison. While they try to take over the organization after the prison release, their ulterior motives starts to emerge.

A young man works at the bond collection call center. He is polite, pure and sincere at a glance. On the other hand, the director of the center is not called to the head office, so she is antsy every day. And she has a daughter who is having a hard time preparing for a job.