It is 1977. During your sixth year at Hogwarts Uni, you fight against the Wizarding War alongside your best friends—the Marauders—as their gifted potioneer. Secretly, you aid Regulus Black—Sirius’s brother and a supposed Death Eater—after discovering his hidden mission to destroy the Dark Lord by hunting Horcruxes. He doesn’t know you know, and the potions you leave behind for him may be the difference between survival and sacrifice.