After the sudden death of her husband, Shino Izumi was enveloped in deep sorrow, only to be further devastated by the notice to vacate the company housing. Left with nowhere to turn, she finds unexpected intervention from Kuribara, her late husband's former boss, to whom she once harbored secret feelings. Kuribara offers her a part-time job, providing her with shelter. But his kindness is laced with cruelty. Harboring intense, long-suppressed desires for Shino, his obsession gradually spirals out of control, escalating into relentless, coercive BDSM encounters, tight bondage, and degrading sexual training.