Michiru Ikoma and her husband Yuichi, coworkers at the same company, find their lives disrupted by their boss, Oki. A strict, sports-club-type personality, Oki routinely forces employees into overtime and drinking sessions. On a Friday night, the eve of their planned trip, Oki drags them out for client entertainment, eventually insisting on staying over at Michiru's home. Furious that their vacation is ruined, Michiru confronts him—only to have Oki react by pinning her down and silencing her with rough physical dominance. Though she resists at first, Michiru is unable to escape his grip. Gradually, her resistance crumbles as overwhelming sensations take over, leading her to a shattering climax against her will.