Priscilla, the daughter of a duke, was raised to be the fiancée of Fred, the Crown Prince of the Kingdom of Milleia.She worked hard every day to become a splendid Crown Princess, but on the day of her unveiling, her soon-to-be-husband unexpectedly disappeared! Thus the second prince, Dill, took his place as her fiancé.In fact, Dill was Priscilla's first love who she tried so hard not to confess her feelings to when she was young.Priscilla could not hide her bewilderment from Dill, who occasionally whispered sweet words to her.Meanwhile, rumors spread within the royal palace that Fred's disappearance was due to a conspiracy, and that Dill was the mastermind...!?