What could be the plot of a 'Harry Potter King of Middle Earth' fanfiction?

Well, perhaps Harry would be super confused at first. He'd find himself in a world full of different races like hobbits, elves, and dwarves. Maybe he'd use his magic to help in the fight against Sauron. He could teach the people of Middle - earth some new spells or ways of magic that they've never seen before.

Maybe Harry could use his magic skills to face the various challenges in Middle Earth, like fighting orcs or helping the hobbits on their journey.

Sauron would surely be one of the main antagonists. His lust for power and domination over Middle Earth is well - known. In this fanfiction, he would see Harry Potter as a major threat to his plans.

Sauron could be a major antagonist. His power and desire for domination would put him in direct conflict with Harry. Voldemort - like elements might be incorporated into Sauron's character in this fanfiction.

In this fanfiction, Harry could be the last man on earth due to a powerful curse from an ancient dark wizard. He'd have to rely on his knowledge and skills that he learned at Hogwarts. He might try to communicate with the portraits in Hogwarts, hoping they can offer some guidance. As he delves deeper into the mystery, he discovers that there are some magical creatures that are also affected by this, and he has to find a way to save them all as well.

One possibility could be that Harry Potter leaves Earth to explore other magical realms in the universe. Maybe he discovers a planet where magic is used in completely different ways than on Earth. He could encounter new magical creatures and make friends with beings who have powers he's never seen before.

One interesting plot twist could be that when Harry Potter apparates to Middle - earth, he discovers that the magic there is so different from his own that he loses his ability to perform some of his usual spells. This forces him to adapt and learn Middle - earth magic, creating a whole new set of challenges for him.

One idea could be that the female Harry Potter arrives in Middle - earth with her magical abilities. She could use her magic to help the hobbits in their adventures, perhaps by using spells to protect them from the Black Riders. Another plot could involve her interacting with the wizards in Middle - earth, if there are any, and comparing and contrasting their magic systems.

Well, perhaps in this fanfic, Harry Potter discovers some long - lost connection to Russia. Maybe he's the heir to a powerful Russian wizarding family. He could use his magic in a unique way influenced by Russian magic traditions, like using spells related to Russian folklore creatures.

Perhaps in this fanfiction, Harry Potter becomes the King of Gringotts due to some prophecy or a special gift he has. As the king, he could start to reform the goblin - wizard relations. He might introduce new policies in Gringotts that benefit both wizards and goblins, which would lead to a whole new set of adventures and challenges as he tries to balance the different interests.