"I want to join a sex party." That's what Ena-san, a woman in her 20s, told me. Why does she want to participate in a sex party? As we continue to follow her, the true nature of a modern woman's sexuality becomes apparent... Contacting the sex party organizer, confessing to her adoptive grandmother, and finally participating in the long-awaited sex party. Overcoming various obstacles, what did she think at the sex party she attended...?