The Fall of the Noble House of Black follows the lives of the many branches of the aristocratic, wizarding Black family tree. The family to the public is cruel, eradicating anyone off the family tree who disagrees with their ideas on blood purity. The story centers around Regulus Black, the teenage heir to the family's fortune, as he is wrapped up in a brewing war. Regulus befriends the most dangerous people in wizarding England and then finds himself in the middle of a surreptitious plot for immortality.