The heir daughter of a baronial family with the greatest wealth in the kingdom, Patricia Ledge, attends Edel Academy, where the children of influential nobles from across the country gather, accompanied by her bodyguard and attendant, Rolf Starein. Patricia lives her school life following the principle of “oshi-katsu”—devoting love, passion, and enormous amounts of money to her favorite idols. One day, she witnesses a dispute between her ultimate favorite, Sheila, and the Bell family’s daughter, Reji, over Prince Aldo. Sensing something off about Reji’s behavior, Patricia begins investigating the Bell family. There, she uncovers that the Bell family is plotting to overthrow the royal family… Everything is for her “oshi”── A fantasy of oshi-katsu where a wealthy heiress solves everything with her money begins!