Two years after the Second Wizarding War, Harriet Potter returns to Hogwarts as the new Defense Against the Dark Arts professor, ready to embrace a life of peace and purpose. But when an ancient, malevolent entity known as the Shadowmancer begins to attack the school, feeding on fear and doubt, Harriet must join forces with the last person she ever expected to fight beside: Severus Snape. As they work together to protect the students and uncover the secrets of the dark magic, an unexpected and forbidden love begins to bloom between them. In the face of growing danger, Harriet and Severus discover that love, hope, and unity are the only forces strong enough to defeat the darkness. But will their newfound love be enough to save them all-or will the shadows consume everything they hold dear?