After ten years of marriage, I still love my etiquette-instructor wife Ryo deeply, though I have not touched her for several years. Feeling guilty, I tell her she may sleep with other men. She dismisses the suggestion as nonsense, but in that instant I recognize my own cuckold fantasy: I want to watch strangers toy with my faithful wife. One day I invite her to a porn theater, where that fantasy begins to become a filthy reality among the sleazy men inside.