뒤틀렸던 모든 일들을 하나씩 해결해나가는 해준과 윤영. 차도 다 고쳐졌고, 이제 정말 돌아가는 일만 남았다. 하지만 모두와 작별인사를 마치고 2021년으로 향하는 그 순간, 해준과 윤영의 발목을 잡는 사건이 발생한다.
After enduring a series of harrowing experiences, Hae-jun finds himself confronted by the culprit, whose identity leaves him utterly astounded. Remarkably meticulous, the culprit erased every possible piece of evidence before being caught. As Hae-jun starts to piece together the puzzle, the trials he faced begin to make sense. He meticulously follows the trail, step by step, in the hopes that it will lead him to the vital evidence he needs.