One possible plot could be Harry using his unique experiences to reform the Ministry. He might start by getting rid of any remaining Death Eater sympathizers in the Ministry. He could also focus on improving the education system for young wizards and witches, perhaps by introducing more practical and ethical magic teachings. And he would surely strengthen the Ministry's defenses against the Dark Arts, having faced Voldemort himself.
The plot could involve Harry facing a lot of opposition at first. Many of the old - fashioned wizards in the Ministry might not like his new - age ideas. For example, he may want to give more rights to house - elves, which would be controversial. But with the help of his friends like Hermione and Ron, he manages to gradually win people over and make the Ministry a more inclusive and just place for all magical beings.
In this fanfiction, the plot could revolve around Harry having to deal with political intrigue within the Ministry. There could be secret factions trying to undermine his leadership. He would have to use his Gryffindor courage and Slytherin - like cunning to outwit his opponents. Also, he might use his fame and the respect he has earned from the wizarding community to implement new laws that protect the Muggle - borns better, as he has always been an advocate for equality in the wizarding world.
Perhaps in a fanfiction, the Minister of Magic is under the influence of a powerful dark charm, and Harry Potter has to find a way to break it without causing chaos in the wizarding world. He might have to team up with unlikely allies from different houses at Hogwarts. This could involve a lot of character development and exploration of the relationships between different wizarding factions.
One possible plot could be that Harry Potter uses his experience in fighting dark forces at Hogwarts to lead the wizarding world as president. He might focus on improving inter - house relations which could be seen as similar to different political factions. He'd also likely use his skills in defense against the dark arts to enhance security in the wizarding community.
Well, perhaps Harry could be trained in some long - lost or dark magic that Dumbledore has been hiding from him. This new training might make him even more powerful than before, able to defeat Voldemort in a more spectacular way.
Well, it could be about Harry Potter becoming the ultimate ruler of the magic world. Maybe he discovers some ancient magic that gives him the power to control all aspects of magic, from Hogwarts to the Ministry of Magic. He might use this power to bring about a new era of peace and harmony among wizards and witches, while also dealing with the dark forces that still lurk in the shadows.
One possibility could be that Harry is cursed by a dark wizard. This curse slowly drains his magic, causing him to struggle with everyday wizarding tasks. He might have to rely more on his non - magical skills and the help of his friends. For example, Hermione could use her vast knowledge to find a way to reverse the curse while Ron provides emotional support.
It could be about a hidden part of Hogwarts that serves as a magic sanctuary. Maybe some students discover it by accident and find ancient spells or magical creatures there.
One possible plot could be that the Prime Minister has to seek help from the wizarding world led by Harry Potter to deal with a dark magic threat that is seeping into the Muggle world. For example, strange magical creatures are starting to appear in London and causing chaos. Harry Potter and his friends then work with the Prime Minister's office to figure out a way to send these creatures back to their proper magical realm and also put up wards to prevent further incursions.
Well, he might start by reforming the Ministry's policies on magical creatures. For example, giving house - elves more rights and better working conditions. He could also focus on improving the education system at Hogwarts, perhaps by introducing new subjects related to modern magic.
One possible plot could be that Harry discovers his unique connection to Lady Magic early on. This newfound knowledge gives him even greater power and a different perspective on his battles against Voldemort. He might be able to access magic in ways that others can't, and use it to protect his friends more effectively.
In a 'Harry Potter left magic behind' fanfiction, the plot could involve Harry feeling guilty about all the destruction magic has caused. So he abandons it and starts anew in a remote place. He tries to build relationships with Muggles based on honesty. But as time passes, he realizes that magic is a part of him and he has to find a balance. Maybe he starts teaching some Muggles about the good side of magic in a very discreet way to help them better understand the world around them.