After her husband’s company collapses and leaves them buried in debt, Mariko searches for a high-paying job and finds a suspicious listing for a “mistress secretary.” At the interview, company president Ozawa orders her to strip and photographs her nude. Captivated by her mature, soft body, he hires her immediately. As his mistress secretary, Mariko submits to filthy kisses in the executive office and spends her days having sex and taking his creampies.