At Hogwarts School of Witchcraft and Wizardry, strange magic begins reacting to Slytherin student Silia Chavez, as if the castle recognizes her. While Hermione Granger, Harry Potter, and Ron Weasley investigate, they uncover a forgotten Fifth House tied to Soul Magic — a forbidden force sealed beneath the school. Draco Malfoy knows Silia’s bloodline is the key to awakening it, and that her presence is breaking ancient seals. As Professor Cassian Vale quietly guides Silia toward the truth, the sealed magic beneath Hogwarts begins to wake — and the school starts changing.