Attack on Hogwarts

I was Harry Potter but my name was Harry Potterwolf and I had a tattoo of a wolf on my left arm. Apparently I did something I wasn't supposed to and my punishment was to be put in a labyrinthian tower with a bunch of hostile giants. At first it was myself and a whole group of Hogwarts students but they were brought to safety by the teachers while I was purposefully left behind. The only way I could get out of this tower was to slip through one of the doors unnoticed, but the giants were constantly looking for me and trying to catch me. I think they wanted to eat me. Eventually I somehow managed to trick them and run away, leave the tower. I felt really good about myself and couldn't wait to get back to the castle and see the expression on my teacher's faces. When I came in it was getting dark. Filch's cat was guarding the entrance, requiring a password which I knew. I made my way down the hall and to the teachers' lounge, where I saw a couple of teachers chatting by the crackling fireplace, Mrs. McGonnagal was taking a nap in an armchair but awoke when I called her. To my disappointment, no one was surprised to see me there unscathed. They did want to write a story about my experience though. I told them my (dead) mother used to be a journalist (??) so they let me work on the report with them. Presumably the next day I went to have a look in the fields around the castle. I was flying around and couldn't be seen. It was a beautiful day. Some distance from the castle, I spotted a group of giants which looked exactly like the ones from Attack On Titan (a show I haven't seen in years but a concept I had since childhood - of ugly creepy giants stomping through the cities eating humans) various sizes. They were fighting each other, punching and pushing in pairs. After a closer look I realised they were actually training. One that looked like an older man collapsed, slowly stood up and walked off in my direction. I watched him but he couldn't see me. All I could think about was what were these giants planning?