Asuka Kanzaki is the leader of the popular idol group Spice. She passed away suddenly on stage and woke up as Louise, the princess of Joule country. Immediately after her reincarnation, a mission "to get engaged to the king of Nowa Country" in order to save her financially troubled nation arises. Will she be able to defeat the unshakeable king, Allen, with the knowledge and skills she gained during her idol days?