The director of Arena Entertainment receives a call from a pregnant acquaintance he hasn't heard from in a while. She asks him to film her having sex while pregnant, before her baby is born. Intrigued by the idea, the director brings along his sex partner and heads to a hot spring inn in the Hokuriku region where the pregnant woman is waiting. At the inn, he dresses his partner in a nurse costume and indulges in a reverse threesome doctor roleplay with the pregnant woman. Next, he makes his partner engage in lesbian sex with the expectant mother, capturing the perverted pregnant woman moaning passionately as she's anally penetrated with a strapon dildo. After seeing the pregnant woman off back home, the director leisurely enjoys sex with his partner at the inn. During their intimate moment, the pregnant woman calls again, pleading, "If I get pregnant again, I want you to film it too," further stirring the director's desires. This video documents that unforgettable trip.