Miki, a devoted housewife who loves her husband, is a woman haunted by trauma from her past as an office worker—she was once a victim of molestation on a crowded commuter train. Having overcome that dark memory, she had been living a peaceful, ordinary life with her husband. One morning, after seeing him off as usual, she went to call a repairman to fix a bathroom issue. But the man who arrived was none other than the very same molester who had assaulted her in the past—an unimaginable shock that shattered her normalcy. A mundane moment in daily life suddenly spirals into terror, as the shadows of her past come violently crashing back.