Yuko has had a long-standing affair with her married boss, Tokuda. One day, their affair is witnessed by her co-worker, Sasaki. Sasaki has long had feelings for Yuko, but his feelings of love and hate turn into a twisted Kokoro for revenge. Sasaki threatens Yuko and forces her into a relationship. Violated, Yuko begins to feel her first awakening as a woman in the young and wild Sasaki.