Anna Machimura is a beautiful housewife who often feels lonely because her husband is frequently away on business trips. With no one around to fulfill her desires, she's been relying on masturbation to satisfy her needs. One day, her home sauna suddenly breaks down, and she calls a repair service. The technician who arrives is unexpectedly a young, well-built, and handsome man, quickly catching Anna's attention. With her husband away, she gives in to temptation, seducing the worker and sharing an intimate encounter with him. For the first time in a long while, she finally feels truly satisfied.