After conquering Heckapoo's challenge, Marco thought he was prepared for anything. He just didn't realize how difficult adjusting to life back on Earth would be.

AU Star was sent to Saint Olga's instead of Earth. At Saint Olga's she slowly loses her individuality as she is forced to become a perfect princess. Marco Diaz is just a average teenage boy living on earth. Eventually fate leads to a destined meeting and Marco is forced to protect a Broken Princess and lead the fight against the forces of evil. Marcoxharem primarily Starco.