The pure and capable secretary Kotone has a hidden side: she's a masochist who climaxes when scolded. Excited by being reprimanded for a work mistake, she indulges in masturbation, only to be caught by her boss. Sensing her abnormal fetish as she prostrates herself on the floor in apology, he smirks coldly. "I'll give you plenty of attention," he says, and with relentless punishment and humiliating discipline, Kotone's body is plunged into a vortex of ecstasy.