Jae-Ho has complete control over his fellow prison inmates and has earned everyone’s respect. But when the new prisoner Hyun-Soo shows up, who under no circumstances let anyone tell him what to do, he realizes he may have found a new partner instead. Jae-Ho decides that he will take over the criminal gang he is part of as soon as he is released, and Hyan-Soo is going to help him. But soon mistrust begins to spread, which may not be so strange in a world where the police are constantly trying to find information... The Merciless has won numerous awards at various South Korean film festivals and has been compared with films like The Departed and The Usual Suspects.