Misa was living a peaceful married life when suddenly she received a letter from her former lover, Odagiri, asking to rekindle their relationship. Her heart shaken, she gives in to her uncontrollable feelings and resumes the affair. Her father-in-law, noticing the situation, begins making one unreasonable demand after another, threatening to expose her secret to her husband. Though Misa wants to refuse, she is crushed under the intense pressure and endures the suffering in silence. Caught in this turmoil, she struggles to find a way to protect herself and resolve her inner conflict, moving forward step by step.