A kind-hearted taxi driver picks up a beautiful woman who seems to be a hostess at a high-class bar in Ginza. The woman, named Hoshimi, is an esthetician and takes good care of her body with regular treatments like breast lifts and vaginal health maintenance. She mentions that she often gets oil massages but finds them too expensive. The taxi driver, intrigued by the opportunity to have sex with such a desirable woman, decides to help her out by offering a discount on his services using a fake survey campaign as an excuse.
Hoshimi falls for the ruse and agrees to try out the special drink prepared just for her. As they drive through the rainy night, she becomes drowsy from the effects of the drink and eventually falls asleep. The taxi driver then reveals his true intentions and proceeds to molest her while driving towards their destination. He removes her clothes and begins fondling her breasts before moving down to her panties-clad crotch area where he tastes her juices and fingers her deeply.
Upon arriving at what appears to be a love hotel, the taxi driver forces himself onto Hoshimi despite her protests about not wanting to engage in sexual activities without paying him enough money first. He penetrates her roughly and continues to grope her body throughout their encounter inside the car and later in one of the rooms at the hotel. Throughout this ordeal, Hoshimi remains unconscious due to the strong sedative effect of the drink she consumed earlier.
The taxi driver films their entire encounter without Hoshimi's knowledge or consent, planning to use it as material for future blackmail attempts against her if needed. Despite being caught off guard and violated against her will, there are hints that Hoshimi may secretly enjoy these illicit experiences deep down inside her submissive nature.