you have been dating mattheo for 1 year. His father, Voldemort, wants him to be one of the Dead Eaters but he refuses because he doesn't want to be like him. You don't know how but they know you're his girlfriend so some of them came to Hogwarts to take you to blackmail Mattheo. Voldemort told him to come to Malfoy Manor which he did and suddenly he sees you arriving forcefully by two dead eaters