Lee Joohyuk, an undercover detective, has spent 15 years infiltrating the corporate-style gang DG Group. He was planning on revealing the evil-doings of the DG Group to the world, toppling them, until... "Have a nice trip." His identity was uncovered, and he was kicked out of the organization. Just as the life faded from his eyes, an apparition of his father, a former hero, appeared. "Son, return here only after achieving the dream you so desire." Joohyuk was sent back to the year 2005. "This time! Certainly, I'll bring you down with my own two hands!" In an era where scoundrels and scum run rampant, I will become a villain, in order to eliminate all evil. (Source: Kakao Entertainment, translated)