Perhaps in this fanfiction, the Battle of NY is a result of a magical artifact being discovered in NY that has the power to change the balance of the wizarding world. Harry and his friends, along with some American wizards they meet, have to race against time to keep it out of the hands of Voldemort or other dark forces. They face challenges not only from the bad guys but also from the muggle authorities who are starting to suspect something strange is going on.
Well, Harry Potter for sure. Then there could be Luna Lovegood, with her out - of - the - box thinking which could be useful in the unfamiliar territory of NY. And perhaps an older wizard who has been living in NY in hiding for years, who comes out of hiding to help Harry. This wizard could have a deep understanding of the city's magical underbelly and guide Harry and his friends through the battle.
In a 'Harry Potter in a Custody Battle' fanfiction, it might be that Harry's muggle relatives and the wizarding community are in a custody battle. The Dursleys could claim they've been taking care of Harry all these years and have the right to keep him. But the wizarding world, like Hogwarts professors, might argue that Harry belongs with his own kind where he can learn magic and be safe from the threats only the wizarding world understands. There could be courtrooms filled with magic spells and arguments about what's truly best for Harry.
An interesting plot might involve a prophecy that links the fate of both worlds. The prophecy states that only by combining the power of the Elder Wand and the sword of Aragorn at Helms Deep can the ultimate evil be defeated. Harry, along with Hermione and Ron, journey to Middle - earth. They face many challenges on the way. At Helms Deep, they have to work together with the people there. Harry uses his magic to enhance the strength of the defenders, while the others from Middle - earth contribute their combat skills. There could be a sub - plot where some of the characters from both worlds develop romantic interests in each other, adding an extra layer of complexity to the story.
One possible plot could be that Harry and his friends accidentally get transported to the Battle of Helm's Deep. They use their magic to turn the tide of the battle in unexpected ways. For example, Hermione could use a spell to make the walls of Helm's Deep even stronger, while Harry and Ron lead a group of wizards to fight off the orcs from above using broomsticks.
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.
In this fanfiction, perhaps there would be new magical discoveries. Since the battle has shaken up the magical world, new spells or magical artifacts could be unearthed. Also, relationships might change. Ron and Hermione could be planning their wedding and inviting all their friends. And Neville, having proven his bravery during the battle, could take on a teaching role at Hogwarts, passing on his knowledge of herbology to the next generation of students.
In a Harry Potter final battle fanfiction, Harry might use some new and unexpected spells. For example, he could combine the Patronus Charm with a powerful offensive spell to repel the Death Eaters in a more spectacular way. Maybe he discovers a hidden power within himself that gives him an edge in the fight.
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.