Do-hun happens to meet Jae-hyun at a university semester-opening party. Back in middle school, the two had shared a deep bond over a short period, making Jae-hyun a truly special person to Do-hun.

However, not only does Jae-hyun fail to recognize him, but he is also surrounded by nasty rumors claiming that he sleeps around with various men.

Upon hearing these rumors, Do-hun impulsively joins Jae-hyun for drinks, which leads to a one-night stand. Using that night as leverage, Do-hun begins to blackmail Jae-hyun, demanding a condition: You must only have sex with me.

Do-hun starts to humiliate Jae-hyun by demanding various acts involving adult toys and cosplay, marking the beginning of their twisted and dysfunctional relationship.