Liselotte, the last princess of a fallen kingdom. Hannah is her sole maid, whom Liselotte brought with her when she sought asylum with the Grand Ducal House of Larus, with whom she had an engagement.

After falling into the water during their exile, Hannah lost all her memories.

While struggling day by day, constantly being pushed around by Charlotte, who aims for the position of the next Grand Duchess, and her maids, the long-awaited Young Duke Vincent returns.

" would you like to become a princess?"
"...Me?"