A poor North Korean fisherman finds himself an accidental defector, and is groomed to be a spy by an ambitious South Korean military officer.

By an encounter with a wiry female lawyer So-hyun at the redevelopment protest site, a cold mobster JANG Se-chool decides to be ‘a good person’ as she advised. One day…

Ma Seok-do works as a detective squad chief. His team struggles to bust a criminal ring who originally came from Yanbian, China and led by Jang Chen.