SBS's new Fri-Sat drama 'The Judge From Hell' has unleashed a new teaser, showing actress Park Shin Hye in her darkest role yet. 

The story revolves around a devil from hell, who possesses the body of a court judge, Kang Bit Na. As a court judge, Kang Bit Na witnesses society's most vicious criminals walking away with weak sentences. Realizing that the world of humans is no less of a hell, she decides to serve justice with her own hands, chasing down convicted criminals and leaving them dead in her wake.

A righteous detective, Han Da On (played by Kim Jae Young), however, disagrees with Kang Bit Na's brutal methods. He considers the "justice" served by Kang Bit Na as a form of "secondary victimization".

Between these two characters with opposing views, what is true justice? Viewers can find out when 'The Judge From Hell' premieres on SBS on September 21 at 10 PM KST. 

SEE ALSO: Park Shin Hye to appear on season 2 of SBS variety program 'Whenever Possible'