One possible plot could be that Harry, being 1000 years old, has lost his memory over time. The story could revolve around him trying to regain his memories and in the process, he uncovers long - forgotten magic and dark secrets of the wizarding world. He might meet descendants of his old friends who help him on this journey of rediscovery.
The plot could revolve around Harry being 2000 years old and having to adapt to the modern wizarding world. He has seen so many changes in magic and society. He might struggle with modern technology in the wizarding world while also trying to pass on his ancient knowledge to the new generation. There could be a conflict where some people want to use his knowledge for wrong purposes and he has to protect it.
One possibility could be that Harry has been alive for 500 years by using some powerful magic that had unforeseen consequences. He might have seen the rise and fall of many magical civilizations and now has a vast knowledge of magic that no one else does. He could be a sort of hermit, living in an isolated place and only emerging when there is a great threat to the wizarding world that only his ancient knowledge can solve.
The plot could involve a situation where a new form of dark magic is unleashed in the wizarding world, which spreads like wildfire and causes destruction similar to 911. The Ministry of Magic is caught off - guard. Hermione, with her vast knowledge, starts researching a way to counter this magic. Meanwhile, Ron and Harry lead the effort to protect the civilians. They set up shelters in places like the Room of Requirement and use Patronuses to guide people to safety. As they dig deeper, they discover that this dark magic was a planned attack by a long - hidden dark wizard group who wants to take over the wizarding world.
It could change the entire timeline. For instance, the events that happened in the original story might be just a small part of a much larger, millennia - long history. Characters' motives and actions could be re - evaluated in the context of this long - term view.
Well, it could be. In the normal Harry Potter universe, we have a set timeline. But in fanfiction, anything goes. This concept might bring in new elements such as ancient magic that was lost over time and how Harry, being 2000 years old, has seen the rise and fall of different magical cultures. It's definitely not something you see in the original books.
Well, in this type of fanfiction, Harry could go back and redo the seven years with a different approach. He may decide to be more open about his experiences with Voldemort right from the first year. This would lead to Dumbledore taking different actions and perhaps training Harry more intensively in magic. Also, Harry could use his knowledge to help his friends like Hermione and Ron develop their magical abilities faster. He could also try to change the way the wizarding world views half - bloods and Muggle - borns, starting from his early years at Hogwarts, which would have a big impact on the overall story.
Maybe it could be an ancient magical being like a centaur. Centaurs are known for their knowledge of the stars and ancient magic. They might take Harry under their wing and teach him old magic that has been passed down through their generations.
One possible plot could involve a group of spiders that have been enchanted by a dark wizard. These spiders start attacking Hogwarts students. Harry, along with his friends Hermione and Ron, would need to find the source of the enchantment and break it to save the school. They might have to explore the Forbidden Forest more deeply and face their fear of spiders to do so. This would combine the elements of adventure, mystery, and the existing spider lore from the Harry Potter series.
The plot could involve Catwoman being drawn into the wizarding world by some mysterious magical force. She might start out as an outsider, trying to figure out how things work. Maybe she gets involved in a plot to steal a powerful magical object, but along the way, she starts to have a change of heart and decides to help the good guys instead.
A plot could be that Gaster has a connection to the Forbidden Forest in Harry Potter. He might be the source of some of the strange and dangerous creatures there. As Harry and his friends explore the forest more, they start to notice Gaster's influence. Gaster could also be using the forest as a way to try and get back to his own world or to gain power in the Harry Potter universe. This would lead to a series of adventures and battles as the characters try to either stop Gaster or understand his motives.