Marina has been frustrated by the recent lack of sex with her husband. In an attempt to turn the situation around, she buys some sexy lingerie, but it's no use, and she masturbates next to her husband, who has already fallen asleep. One day, when her husband brings his subordinate Shimada home after a drinking party, Shimada can't help but stare at the sexy and beautiful Marina. Noticing his gaze, Marina decides to take advantage of her husband's drunkenness to release her pent-up sexual desire on Shimada, and seduces him...