A man follows his work colleagues, a couple who are about a year apart in age, to a hot spring inn where they engage in intimate activities such as handjobs and fellatio. He then sneaks into their private bathroom and surprises them while they are enjoying each other's company. After playing around, he drugs both of them using sleeping gas and proceeds to have his way with the woman while she is unconscious. Despite her partner being awake but unable to resist due to the effects of the gas, the man continues to pleasure her orally and vaginally before finally cumming inside her. Throughout this encounter, there is a strong focus on the female's body and desires, with the male protagonist taking control and dominating the situation.
