Ron Weasley's twin sister breaks family tradition when sorted into Slytherin. Fiercely intelligent and strategically minded, Lettie thrives in her house despite her surname's stigma. She pursues forbidden knowledge about dark magic from academic curiosity, befriends Tracy Davis, and maintains an unlikely study partnership with Hermione. As Lettie carves her own path separate from Weasley expectations, she faces a fundamental question: can ambition and loyalty coexist, or must she sacrifice one to achieve greatness?