Misaki, a housewife, struggles to raise her five-year-old daughter, Sakura, who has a developmental disability. Her days are worn down by her emotionally distant husband, Yuichi, who treats their parenting struggles as someone else's problem, and the harsh words of her mother-in-law. Then one night, Misaki discovers a shocking truth in her husband's study. Yuichi has been openly writing on a secret social media account, posting remarks that belittle his family and detailing secret meetups with his mistress. The moment she realizes what she thought was love was merely an illusion, Misaki's world begins to come crashing down.