A woman named Etsuko runs a rundown inn specializing in overnight stays. Lately, customers have dwindled, and business is struggling. Just then, she receives a group reservation. Determined to entertain them properly, she welcomes the guests, but something doesn't add up. It seems they mistook her inn for another one they were supposed to book. However, the unsatisfied customers press their demands on Etsuko. She manages to prepare and entertain them, but due to a mistake, the customers become enraged. To apologize, Etsuko says she'll do anything. The guests' boss orders his subordinate to perform fellatio on Etsuko, leaving her no choice but to comply. Desperate to escape the situation, she performs fervently, but finds herself aroused by the men's actions. The next day, Etsuko is taken to the bathhouse and ordered to entertain the subordinates with soap play. Reluctant, she still reaches climax under their hands. On the final night of the banquet, Etsuko is forced to participate in a game of King's Command. Knowing it's staged but unable to refuse, she starts with soft erotic acts but ends up having sex. The boss, who had been watching and commanding Etsuko, can't resist her submissiveness and secretly uses her for release, but gets caught by the subordinates. Panicked, he lies that Etsuko initiated it, so the subordinates take her to the bedroom. Etsuko is raped in turn by the men, reaching climax multiple times, experiencing endless pleasure…
