Lee Min-soo's investigation is sluggish due to Min Ji-young's interference. Gaetal tries to judge Min-soo by putting him in the Killing Vote.

The majority votes to abstain from executing Seok-joo, and his Killing Vote is canceled. As Seok-joo is about to hand over the voting program, Chul-min tackles him, and they both fall deep under water. Meanwhile, someone holds a Gaetal mask in their hand, and they put it on. Who could it be?