Well, it could be a lot of things. Maybe Harry moves to a new magical place, like a hidden wizard village far from Hogwarts. He might meet new and interesting characters there, and have adventures that are different from his usual ones at school.
Obviously, Harry would be one of the main characters. But there could also be new characters that the author creates for the story. Maybe there's a wise old wizard who takes Harry under his wing in the new place he moves to.
Well, it could be that Harry moves away to escape some dark magic threats in his hometown. Maybe he goes to a far - off magical community where he has to learn new spells and make new friends.
There could be new characters introduced in this fanfiction. For example, a local wizard in the place where Harry moves to could become a main character. This wizard could initially be suspicious of Harry but later become his friend. Also, a magical creature that Harry befriends in his new location could be a central figure. It could help Harry adapt to his new surroundings and teach him things about the local magic that he didn't know before.
One possible reason could be that Hermione wants to pursue her own independent magical research. She is highly intelligent and may feel the need to focus on her studies without the distractions that come with being close to Harry. Another reason might be a disagreement over some major decision in the wizarding world. For example, if Harry has a different stance on how to deal with the remaining Death Eaters or how to reform Hogwarts' curriculum, Hermione, with her strong opinions, may choose to distance herself to avoid constant conflict.
The relationship becomes more strained. Without Hermione's constant presence, Harry may feel a sense of loss and confusion. He might be used to relying on her for advice and support, so her absence makes him more vulnerable. On Hermione's side, she may start to see Harry from a different perspective, as she is no longer in the thick of things with him all the time.
Well, perhaps Percy moves to a new town and has to start at a new school. He might struggle to make friends at first, feeling like an outsider. Then he could meet someone who changes his perspective and helps him fit in.
One possibility could be that Hermione moves away to protect the dragon. Maybe she discovers some dark forces are after the dragon for its magical properties, and by moving away with it, she hopes to keep it safe in a secluded location. She might have to face many challenges during this journey, like finding a suitable place for the dragon and dealing with those who oppose her decision.
One common plot could be the emotional turmoil that Peter and Liz experience as they part ways. Maybe they have a big argument before one of them moves away.