Ba Reum died in the prison, but then he woke up in his old body, his memories of the future all there in his head. What wasn't there in his head was the new brain, the one that made him feel any regret or empathy. Now armed with the knowledge of what OZ is, how will he deal with them?

Yo Han was ready to finally confront Ba Reum and get a confession out of the predator. But when Ba Reum keeps on denying the fact that he's the killer, doubt sets in. In a quick decision, Yo Han decides not to kill Ba Reum, but kidnaps him to find out the truth. A world where Ba Reum is who he pretends to be.