Three months ago, Yuko married the man she loved, dreaming of a blissful married life. However, reality turned cruel when her husband suggested she move in with his mother, Eriko. From that moment on, Yuko's life changed completely. She suffered constant verbal abuse, sarcastic remarks, and increasingly severe sexual harassment from her domineering mother-in-law, driving her deeper into despair. One day, Eriko began exhibiting disturbing behavior toward Yuko, trapping her in an inescapable nightmare from which there was no way out.