After tragedy destabilizes Monster High, vampire student Draculaura seeks comfort in her late mother's old journals at the cemetery and instead finds Poe, a human boy, and the beginning of a romance her ghoulfriends won't approve of and his monster-hunting father would actively oppose. When the school's protective wards fail and humans breach the campus, Draculaura and Ghoulia uncover an old secret about Draculaura's own identity that forces her to choose between the school and the boy.
Summary by Loreful, from public sources