Fanfic: Harry Potter meets the King Arthur, what could be the plot?

In a fanfiction where Harry Potter meets King Arthur, there could be a magical exchange of spells and swordsmanship. Harry might show King Arthur some of the modern magic from his world, like the Patronus charm. Arthur, in turn, could teach Harry about the code of chivalry and the art of sword fighting. Maybe they would team up to fight a common enemy, using a combination of magic and medieval combat skills.

The magic of apparition and disapparition could be a huge addition. Although it might be a bit difficult to master in a new magical environment, if Harry could use it, it would change the way battles are fought or how people travel in King Arthur's world. It could be used for surprise attacks or quick escapes. Also, the magic of the Marauder's Map could be very useful for keeping track of people within Camelot, whether it's to find a lost knight or to keep an eye on potential traitors.

Maybe Prince Arthur is on a quest to find his true identity and he discovers that King Arthur is an important part of his past or future. They meet and King Arthur recognizes a great potential in Prince Arthur. He takes him under his wing and together they face a common enemy, like an evil sorcerer who is threatening Camelot. Along the way, Prince Arthur has to prove himself worthy to King Arthur and the knights of the Round Table.

One possible plot could be that Harry discovers his true heritage as King Arthur's son. This would likely throw the wizarding world into chaos as it challenges the existing ideas about his family. He might inherit some of Arthur's leadership and combat skills, which could be used to fight Voldemort in a new and unexpected way.

One idea could be a fanfic where Harry Potter discovers a hidden portal in Hogwarts that leads him to the time of King Arthur. He could use his magic skills to assist Arthur in battles, perhaps using spells to defeat the enemies that Arthur's knights struggle with. For example, Harry could use the Stunning Spell to incapacitate a large group of invaders.

One possible plot could be that the Hogwarts students are on a field trip when they accidentally stumble into the world of the Enterprise. Harry and his friends could help the Enterprise crew deal with a magical threat that the crew's technology can't handle. For example, a dark wizard has created a spell that is causing chaos on the Enterprise and only magic can reverse it.

Well, it could be that Harry Potter, while on a magical mission, somehow gets transported to Star City where Oliver Queen operates. Oliver, being the vigilant Arrow, at first mistakes Harry for a threat. But then they realize they both fight for justice in their own ways. Harry could use his magic to assist Oliver in taking down some really tough villains that the Arrow alone couldn't handle, like some dark magic - infused criminals.

One possible plot could be that Gaster somehow gets transported to the wizarding world of Harry Potter. He might initially be confused but then start to study the magic there. Maybe he tries to combine his own knowledge with magic, leading to some unique spells or potions. Harry and his friends could be both intrigued and cautious of this strange new character.

One possible interesting plot could be that the magic from the Harry Potter world starts to seep into the Percy Jackson universe, causing chaos among the demigods. For example, Hogwarts could suddenly appear in the middle of Camp Half - Blood. The demigods, not used to this type of magic, would be both curious and threatened. Meanwhile, Harry and his friends could get accidentally transported to the Percy Jackson world and have to team up with the demigods to figure out how to send Hogwarts back and restore the balance between the two magical systems.

It could be about Harry Potter achieving ultimate power and ruling the wizarding world. Maybe he overcomes new and even more dangerous dark forces and in the process, he becomes the king. He could make new laws and bring about great changes to Hogwarts and the entire wizarding community.