Chihiro grew up in a strict household and didn't experience freedom until she became a university student. After finally losing her virginity, she became addicted to pleasure and eventually got married. However, as the years passed, her husband grew distant and began having affairs with other women. Initially, Chihiro endured the situation, but gradually she began craving intimacy with other men. Burdened with inner conflict, she decided to seek new encounters with the help of a friend. Invited to a drinking party, she takes her first step into a new world.