After graduating from college, Azumi returns home, determined to uncover the hidden truth behind her parents' deaths. She approaches Yoshimura, her father's former assistant, and with his help begins to unravel the mystery. Gradually, she becomes aware of the twisted sexual nature deeply embedded in her bloodline. Shocked to discover she has inherited her father's deviant obsessions and her mother's masochistic lust, she is forced to confront this disturbing reality.