Rosamund and Emily Miniver are back in Artemisia where all their adventures began. This time, an army of fans is with them, determined to put a Miniver on the throne. However their plans quickly start to fail when a rival pop star, Goth princess Tracy T., plots with their enemies to ruin their chances of a comeback.
Only a mysterious old man can stop Madame and Titus's evil schemes and reveal the truth of the Minivers' true identity. But first Emily must pass the test that awaits her in the Ninth Basement--and Rosamund must make a decision that could keep the Minivers from the top of the charts forever.