Perhaps in the 'harry potter revolt fanfic', there could be a revolt within the Death Eater ranks. Some of the younger or more disillusioned Death Eaters might realize the error of Voldemort's ways and start a revolt against him. They could join forces with the Order of the Phoenix in a very unexpected alliance. This would bring a whole new perspective to the fight between good and evil in the Harry Potter universe.
Well, in a 'harry potter revolt fanfic', a possible plot could involve a revolt led by the house - elves. They've been oppressed for so long, and they might rise up against the wizarding world that has treated them as servants. They could use their unique magic, which is often underestimated, to fight for their rights. This would completely change the power dynamics in the wizarding world and make for an exciting story.
One idea could be a revolt against the Ministry of Magic's unjust laws. Maybe the characters unite to fight against discriminatory regulations that target certain magical creatures or wizarding groups. Another could be a student revolt at Hogwarts against a particularly tyrannical headmaster or teacher. For example, if the new rules are too strict and limit students' freedom to learn magic in their own ways.
One idea could be a crossover where characters from both universes meet. For example, Harry Potter could encounter Eragon and they could learn from each other's magic systems. Maybe Harry could teach Eragon about some of the more complex spells in the wizarding world, while Eragon shows Harry how to bond with a dragon in a more in - depth way.
You could also create a plot where a character who thought they had no connection to the Potter heritage suddenly discovers they do. This revelation could change their entire life. They might have to deal with newfound magical abilities that come with the Potter bloodline, and also face the enemies that the Potter family has made over the years, like some die - hard Death Eaters who still hold grudges.
A great plot idea might be a Craftsmith who is actually a descendant of an ancient wizarding family with long - lost spells and abilities. This Craftsmith uses their skills to recreate those spells and in the process, uncovers a plot by dark wizards to use these forgotten magics for evil. As the story unfolds, the main characters have to stop the dark wizards while also learning about the new and old magics.
One idea could be exploring what would happen if a new, mysterious student joined Hogwarts during the Triwizard Tournament. This student could have a hidden agenda related to the Dark Arts and start influencing the events of the tournament in unexpected ways.
One idea could be that the orphanage is a hidden place for magical orphans with special powers. The orphans form a secret society within the orphanage to protect themselves from dark wizards who want to use their powers. They learn magic on their own, using old books they find in the attic of the orphanage.
One plot idea could be the characters from Harry Potter learning about the different types of power and ranking systems in DxD. For example, Harry might be intrigued by the concept of Sacred Gears and try to figure out if there's anything similar in the wizarding world.
One idea could be an Acromantula befriending a Hogwarts student who is an outcast. The student discovers the Acromantula has a unique ability that could help in the fight against Voldemort. So they team up secretly.
One idea could be Harry Potter arriving in Skyrim and using his magic to combat the dragons. Maybe he teams up with the local mages and they learn from each other's magical techniques.
One idea could be an apprentice who discovers a long - lost spell that can bring inanimate objects to life in a very different way than the usual magic. For example, they make Hogwarts portraits come down and interact physically with students.
In some 'harry potter apocalypse fanfic' plots, there could be an invasion from another dimension full of dark and powerful creatures. This invasion could be the start of the apocalypse. Harry Potter and his allies would have to quickly learn about these new threats and find ways to defend the wizarding world. It might also involve a situation where the Ministry of Magic fails completely during the apocalypse, and it's up to the students and a few rogue wizards to save the day. They could discover new and hidden magics in the process of fighting for survival.