After learning of Da-jeong's investment briefing, Do-han makes a visit and witnesses a shocking scene. Meanwhile, Jong-hun vows not to cover up anything any longer and starts to delve into the case. In doing so, he tells Do-han the truth about the night of his abduction.

Determined not to repeat his mistakes, Jong-hun looks back at his shameful past and reinvestigates the No Sang-cheon fraud case. In the process, he unexpectedly runs into the ones that helped No Sang-cheon flee previously.

Do-han and the fraud victims confirm through the testimony of Han Da-jeong that Jae-hwang's death is connected to Assemblyman Kim Seong-dae. Intent on facing them head-on, Do-han heads back to Magang Station and runs into Park Sang-do, Kim Seong-dae, and a new face in the Commissioner's office.

With all police reinforcement cut off from Do-han, the culprit behind the serial murders turns up. After a lengthy chase, Do-han finally figures out the real reason behind the murders.

Do-han is offered cooperation from an unexpected individual. If Do-han agrees to help get their revenge, assistance in the capture of the serial murderers would be provided. Do-han is outraged at the deal. Meanwhile, the fraud victims who don't trust Do-han start a search party, ignoring Na-yeon's pleas.

Each driven by their individual search for truths, Do-han and the fraud victims all reach the same destination. There they face another predicament, and Do-han has to make a critical decision to save everyone's lives.