Hadria Potter is a musical prodigy, twin sister to the boy-who-lived, and a genius overall, but she is also darker than she appears. By the age of nine, she is famous in the musical world, a murderer, and planning to use her strange powers to get her way. When Dumbledore brings her her Hogwarts letter, she discovers that he placed her twin brother in a loving home while leaving her with the Dursley's. With this knowledge, she plans to steal his greatest weapon, her brother, and use him to create her own side in the war to come.