A young married woman named Yui lives under the same roof as her husband, father-in-law, and brother-in-law. After her husband leaves for work, she is subjected to continuous sexual assaults by both her father-in-law and brother-in-law. Forced to accept this abuse as part of her daily life, Yui's mental state gradually deteriorates. Desperately clinging to the hope of preserving her marriage, she endures the torment in silence. But eventually, her breaking point arrives.