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.