By a twist of fate, Mayuko checks in to the renowned Honnouji Hotel and finds herself transmigrated to the year 1582. There, she meets Nobunaga Oda, a historical figure. When Mayuko is taking a stroll in feudal Kyoto, she suddenly recalls the infamous Honnō-ji Incident where Nobunaga Oda loses his life. Will Mayuko break the truth to Nobunaga? Will she make it to her own wedding in time?