Well, it could be that Hermione has amnesia for some reason. And in order to help her regain her memories, Hogwarts uses its magic to project her old memories for everyone to see. As they watch, they might discover things about Hermione that they never knew before. Maybe there are hidden talents or experiences she had that could change how people view her. Also, it could be part of a competition where students have to analyze Hermione's memories to win a prize related to academic achievement.
Perhaps the plot could involve a time - travel related issue. Maybe someone has messed with time in Hogwarts, and Hermione's memories are the only way to figure out what went wrong. So, the Hogwarts community watches her memories to see if there are any hints about the time - travel event and how to fix it. It could also be that a new student is having trouble fitting in, and Hermione's memories of her own early days at Hogwarts are shown to help the new student feel more at home.
One possible plot could be that Hogwarts, as an entity, watches Draco's memories to understand his internal struggles better. Maybe it's to find a way to help him redeem himself. For example, Hogwarts might see his memories of being pressured by his family to follow Voldemort and then feel sympathetic towards him, leading to some kind of magical intervention to guide Draco onto a better path.
The teachers would probably be very interested. For instance, Professor McGonagall might want to see Hermione's memories to understand her learning process better, so she can use that knowledge to teach other students more effectively. Also, Harry and Ron would be interested. They are her closest friends, and seeing her memories could give them a deeper understanding of her and their shared adventures.
Well, perhaps in the fanfiction, Fenrir Greyback is under the command of Voldemort to watch Hermione as she is seen as a threat to the Dark Lord's plans. He might follow her around Hogwarts, observing her every move. This could lead to some tense moments where Hermione senses she's being watched but can't quite figure out who it is at first. As the story progresses, she could start to set traps to catch her stalker, which would be Greyback. And there could be a big showdown between them in the end.
The magic within Hogwarts could be influenced by Harry's memories. If he remembers a time when he used powerful magic, the magic in the castle might resonate with it. This could lead to strange phenomena, like the secret passages opening on their own as if they are reacting to the power within Harry's recollections.
One possible plot could be that the students and teachers at Hogwarts watch Harry's memories of facing Voldemort in the graveyard in 'Goblet of Fire'. They might be shocked and sympathetic, and it could lead to a greater understanding of Harry's burden. Another plot could involve Harry's memories of the Dementors affecting him, and as they watch, they figure out ways to help him better combat the Dementors' effects in the future.
One key event could be the revelation of Snape's true feelings for Lily. In the fanfiction, as students in Hogwarts watch his memories, they might see how his love for her was deep and long - lasting, which influenced his actions throughout his life at Hogwarts.
Maybe in the fanfiction, Snape watches Harry's memories in an attempt to find some hidden secrets. He could be looking for clues related to Harry's connection with Voldemort. As he delves deeper into the memories, he might start to understand Harry's courage and loyalty in a way he never did before.
One possible plotline could be that Pansy is in a secret relationship with someone at Hogwarts, and the pregnancy is a huge shock to her and her partner. They then have to deal with the consequences, like how to hide it from other students and teachers, and what their future might hold.
In this fanfiction, perhaps there are magical creatures that are drawn to the graveyard for some unknown reason. The students might try to befriend these creatures to understand why they are there. It could also involve a new spell or magical object that is related to the graveyard and Hogwarts students are on a quest to find it.
One possible plotline could be that Hermione, being the intelligent and curious witch she is, stumbles upon the legend of Lucifer in the Muggle world. She becomes intrigued by the concept of such a powerful and complex figure. Maybe she starts researching more about Lucifer's nature and motives, and this new knowledge somehow influences her magic or her relationships at Hogwarts. For example, she might start to question the nature of good and evil in the wizarding world in a new light, similar to how Lucifer is often a symbol of rebellion against the status quo in his own lore.