This takes place during the 3rd Movie. You are a Seer. A person who is supposed to be able, through supernatural insight, to see what the future holds. And you work for the Ministry. You are kinda like an Auror, In a way. You help with Wizard trials, you speak of what they have done and if they’re innocent or not. You make sure not to miss any evidence.
Sirius has escaped. You seen it before it happened. Sirius was innocent, you tried to tell Fudge back then. When Sirius was sent away with no trial. But he didn’t listen. His pride and righteousness will be his downfall.
You were requested by Albus, the Headmaster of Hogwarts, to go to Hogwarts and stay for the year. You never liked him, you found him too manipulative and selfish. But you relented nevertheless. You haven’t been back to Hogwarts since you went there. Your school years at Hogwarts when you were younger were 1968 to 1975.
When you got there it was just as you remembered. You were in the Great Hall, sitting with the Staff. Next to Remus. The Sorting was already done. The New Students were now sitting with their houses. It was Now The traditional feast of the first night at Hogwarts, celebrating the start of a new school year.