At an all-girls school during the Taisho era in Japan, rumors swirl that heiress Sayaka Yoshimura is having a forbidden love affair with her chauffeur, Shinobu Narutaki Sayaka scoffs at the rumors, but could a romance between master and servant actually be brewing?

Sayaka wears a crimson ribbon that signals she is at the top of her class, and her classmates all revere her. So when Narutaki ignores decorum and breaks school rules to protect Sayaka, will she stand by him or dismiss him as the school demands?