Kayoko is a housewife with a kind personality. One day, her husband ordered an interior renovation of their house, and craftsmen began coming to their house every day. Kayoko watches with a smile the young and cute "apprentice craftsman" working in their house. The apprentice makes mistakes at work and is severely reprimanded by his intimidating boss, but he works hard. But one day, when Kayoko goes to the bedroom, she finds the apprentice sniffing her underwear and masturbating enthusiastically...