In a fanfiction where Harry Potter never went to Hogwarts, he might be trained by a group of rogue wizards. These wizards could be against the traditional ways of Hogwarts. They could teach Harry some unique forms of magic that are not taught at Hogwarts. This would set him on a different path, perhaps making him an outcast among the traditional wizarding community, but also giving him a set of skills that are very different and powerful.
One possible plot could be that Harry Potter discovers a different magical school. Maybe he stumbles upon a hidden school in the Muggle world that has been secretly teaching magic. He could form new friendships and face different types of magical challenges there. It would be a completely new magical experience for him, away from the familiar Hogwarts environment.
One possibility is that Harry grows up in the Muggle world completely unaware of his wizarding heritage. He might lead a normal life, going to a regular school, making Muggle friends, and having no idea about the magical world that could have been his. Maybe he has a natural aptitude for something like martial arts or a particular academic subject that in the wizarding world would be replaced by magic.
Hermione and Ron might not become friends in the same way. Since Harry was the catalyst for their friendship at Hogwarts, without him there, they might not cross paths as easily. Hermione could be more focused on her studies alone in a different school, and Ron might be stuck in his family's shadow without Harry to bring out his better qualities.
The Dumbledore character could still be important. He might be secretly watching over Harry, guiding him from a distance. Another character could be a new wizard or witch that Harry meets in the Muggle world who has a special mission related to Harry. For example, a young witch who has been exiled from the wizarding world but has the knowledge to help Harry understand his powers. And of course, Voldemort would still be a main antagonist as his threat looms over the entire wizarding world whether Harry is at Hogwarts or not.
Perhaps she discovers a different magical school or a secret magical community outside of the Hogwarts system. In this fanfiction, she could be mentored by an eccentric and powerful wizard who has his own way of teaching magic, far removed from the traditional Hogwarts curriculum.
One possibility could be that Snape grows up in a different magical environment, perhaps in a small, hidden magical community that has its own unique way of teaching magic. He might develop his skills in potion - making and the Dark Arts in a more self - taught or community - guided way. Without the influence of Hogwarts, his relationships would be very different. He may not have the same intense rivalries or unrequited love for Lily Potter.
The plot could develop with Harry being mentored by a solitary wizard or witch who doesn't believe in the Hogwarts system. They could teach him magic in a more unorthodox way. For example, instead of formal classes, he could learn magic through real - life experiences and solving problems in the wizarding community outside of Hogwarts. This would give him a different perspective on magic compared to the traditional Hogwarts - educated wizards.
Well, in a lot of such fanfictions, Harry often takes on an even greater role as the guardian. He might have to face new and more powerful dark forces threatening Hogwarts. Maybe he discovers some long - lost magic or forms new alliances within the school to protect it.
It could be some dark wizards who are trying to take over the wizarding world outside of Hogwarts' influence. Since Hogwarts is often a place that trains wizards to fight against dark magic, without it, these dark wizards might have more freedom to operate.
One possible plot could be that Harry, as the 'King of Hogwarts', uses his new - found status to reform the school's rules. He could make the houses work together more closely, perhaps by creating new inter - house competitions that focus on cooperation rather than competition. For example, a magical scavenger hunt where students from all houses must team up to find hidden magical artifacts around Hogwarts and its grounds.
Well, it could be about Harry's journey to fully embrace his role as a prince in Hogwarts. Maybe he discovers some long - lost royal heritage of the wizarding world that gives him new powers and responsibilities.