Married 25-year-old Maina and her 42-year-old lover Dan travel north for a baseball game, but a 12-inning thriller makes them miss their flight. Dan books a hot-spring inn, where sake brings out Maina's wild side. She strips him, licks liquor from his body, teases him with humiliating poses and distinctive oral, then rides him hard in several sweaty positions. When her husband calls, she answers naked while Dan tickles and fingers her until she squirts. They keep switching control through hot-spring oral, sleepy morning sex, creampies, and swallowed loads, releasing ten shots before checkout.