Her husband brings his brother, Yuji, home after a long time. Wife Aya is happy to see him again and entertains him, but she is weak-willed and easily influenced by others. Knowing Yuji's infertility issues, she hesitantly spreads her legs. His skillful words and persistent, accurate caresses gradually arouse her desire from within. Her developed body is soon drawn into the exciting adultery with her brother-in-law.
