After learning that Charlotte's younger sister Natalia is in trouble, deviant sorcerer Allen and his crew set off to rescue her. Their destination: Athena Island, home to the Athena Magical Academy, where Allen grew up with his adoptive family. But figuring out what trouble a seven-year-old could've gotten into isn't Allen's only daunting task, as his first trip home in three years threatens to reignite an explosive argument he had with his father--one that forever changed the course of Allen's life.