Mr. Shin uncovers hidden corruption involving Choi Woong-sik. To put a stop to Choi's reckless rampage, Mr. Shin declares his candidacy for the city council. However, a sudden food poisoning incident at Mr. Shin's chicken restaurant throws his campaign into an unexpected crisis. Meanwhile, Pillip relentlessly pursues evidence of a school bullying scandal involving Choi Yong-min.

On the anniversary of Jun's death, Mr. Shin visits Yun Dong-hee, who killed his son 15 years ago, in prison. There, he unexpectedly runs into Choi Cheol, the detective who was in charge of the case at the time. As Pillip delves deeper into Mr. Shin's past, he uncovers the tragic story of his son's death. Meanwhile, Kim Sang-geun asks Mr. Shin and Pillip to mediate a dispute over a house security deposit return. But in this case, both the plaintiff and the defendant seem like victims.

News breaks that Yun Dong-hee has escaped from the hospital, sending shockwaves through everyone involved. Mr. Shin and Choi Cheol each start pursuing Yun Dong-hee in their own ways. Meanwhile, during a mediation over a deposit refund lawsuit, it's revealed that the entire case was a scam orchestrated by Oh Mi-sook. Enraged by the con that used her son as a pawn, Mr. Shin is willing to go to any lengths to seek justice.