After her stay in the Haymalaya's, Daring Do had been looking forward to some rest while she wrote her next book. Instead, she finds herself press-ganged into leading an expedition at the command of Prince Blueblood. The prince has decided to mount an expedition for the legendary, long-lost palace of Princess Platinum.

For Daring, the motive is simple; the chance to find lost artifacts, treasure ad adventure. But is Bluebloods distant relation to the princess really the only reason he wants to find her lost palace? Daring doubts it; but as the secrets of the Platinum Palace, Princess Platinum and Clover the Clever are revealed, that doubt might just get everypony killed...