Iroha is a housewife who married into a wealthy family and lives a life of luxury. However, her boring daily life is tempted by the devil and she ends up having an affair with her husband, who works at a liquor store. Kurihara, the driver, happens to witness the affair. He uses this as a threat to trick Iroha into joining his bondage training hobby. Iroha, who had no idea that she had been seen, reluctantly complies with Kurihara's demands, but gradually she awakens to a pleasure she had never known before...