While driving a car, the son of the imperial family, Tsukasa, is about to endanger the girl Lily who has jumped out. Tsukasa decides to take care of Lily, who has lost her memory due to the accident. Lily was then accompanied by Tsukasa's adventure in studying ancient civilization. The adventure of harahara and pounding, the romance of Lily and Tsukasa, and the identity of Lily that gradually becomes clear ...! ?? A magnificent love story between Lily, a beautiful girl who lost her memory, and Tsukasa Ayakoji, of the royal family!