35-year-old office worker Jung Ian has regressed to the winter before his high school entrance. Though his body has become younger, has his soul already grown old and sick? He dreamed of starting over and becoming popular, but failed miserably. Moreover, things like dreams, passion, love, and heart-fluttering feelings had long since disappeared without a trace. His only remaining goal was to quietly graduate high school and go all-in on Bitcoin. "Hey! The top student in school is looking for you again?" "The girl who came earlier was fucking gorgeous, but this one's different? If I study hard, will I get as popular as him? Goddamn it, why the hell does that loser..." But life just never goes according to plan.