What could be the plot of a 'Harry Potter son of King Arthur' fanfiction?

Well, one possible plot could be that Harry discovers his true heritage as the son of the Demon King gradually. He might struggle with new-found powers that are both a blessing and a curse. He could face opposition from the wizarding world who fear his demonic lineage, while also having to decide whether to embrace or reject his dark side.

One possible plot could be that Harry Potter is somehow transported to the time of King Arthur through a magical mishap. Maybe he has to use his wizarding skills to help King Arthur in a battle against dark magic that is threatening Camelot. His spells and knowledge of magic could be a great asset.

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.

Maybe it's about Harry's journey to prove himself worthy of the throne.

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 idea could be that Harry Potter discovers an ancient magic artifact that transports him to the time of King Arthur. There, he uses his magic skills to help Arthur in a battle against a powerful dark sorcerer. Maybe he teaches some of the knights a few new spells.

Well, one possibility could be that Harry has some sort of angelic powers inherited from Castiel. He might use these powers to fight Voldemort in ways that are different from the original story. For example, he could heal the injured more effectively during the battles.

Well, perhaps the plot could involve Harry discovering his Titan heritage and having to deal with new powers. He might struggle to balance his wizarding world life with this new Titan side. Maybe he has to face enemies that are both from the wizarding world and related to his Titan lineage.

Well, one possibility could be that Harry discovers his true parentage as Sauron's son in a very shocking way. Maybe through some dark magic revelation. Then he might struggle with his identity, being a part of the wizarding world that he loves but also having this dark connection. He could face a lot of inner turmoil as he tries to decide whether to embrace his dark heritage or fight against it.

In this fanfiction, perhaps Harry's identity as the Joker's son makes him an outcast in the wizarding world. The story could revolve around him trying to prove that he's not just a product of his 'father's' evil. He could use his Joker - like cunning and unpredictability to outwit his enemies in Hogwarts, who might be prejudiced against him due to his strange heritage.