One possible plot idea could be two versions of Harry Potter existing simultaneously in Hogwarts, causing chaos as they both try to deal with Voldemort in different ways. Another could be that a spell creates double trouble for Harry, like his magic splitting into two opposing forces that he has to reconcile.
In the 'double trouble harry potter fanfiction', it might be about a time - travel related double trouble. Harry somehow travels back in time and meets his younger self. This causes all sorts of problems as any change in the past could have huge implications for the future. They might both have different ideas on how to deal with the threats they face. For example, the younger Harry might be more impulsive while the older Harry has more experience and knowledge. They have to work together to make sure that they don't accidentally change the timeline too much while still finding a way to defeat Voldemort.
Well, perhaps in this 'double trouble harry potter fanfiction', there could be a situation where Harry's doppelganger is created by a dark wizard. This doppelganger has all of Harry's knowledge but is under the control of the dark side. Harry then has to figure out how to defeat his own double and save the wizarding world. It could involve a lot of internal struggle for Harry as he faces someone who is essentially himself. Also, the double might be used to infiltrate the Order of the Phoenix, causing a lot of mistrust and problems within the group.
One idea could be to have two rival trainers who both accidentally release two extremely rare and powerful Pokemon at the same time, causing double the chaos. These Pokemon could be a legendary pair that are known to cause trouble when together, like Ho - Oh and Lugia. Their combined powers could disrupt the balance of the Pokemon world, and the trainers must work together despite their rivalry to calm them down.
Harry Potter is bound to be one of the main characters. Since it's about 'double trouble', there could be a version of Harry that is different in some way, like an evil Harry or a Harry from an alternate dimension. Ron and Hermione would be there to support the real Harry. Dumbledore might also play a significant role as he often has the wisdom to deal with complex situations. And, of course, Voldemort could be a central figure as well, as he is the main antagonist in the Harry Potter series and any double trouble might be related to the battle against him.
One idea could be a what - if scenario where the Lee brothers have to face a new, more powerful enemy from another dimension. This enemy has unique fighting styles that force the brothers to adapt and learn new moves.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
One interesting plot could be a time - travel story in the Harry Potter wonderland. For example, a character goes back in time to the Marauders' era and gets involved in their adventures, while also trying to prevent a future disaster in the wizarding world. Another idea is a story where a new, powerful magic is discovered in the wonderland, and Harry and his friends have to figure out how to control it before it falls into the wrong hands. A third plot could be about an alternate reality where Voldemort won the war, and the remaining good characters have to find a way to reverse the situation in the harry potter wonderland.
One plot idea could be that Bella discovers she has a hidden magical ability that only Harry can help her understand and control. Maybe it has something to do with an ancient magic that's connected to Harry's destiny.
One interesting plot idea could be a fanfiction where the magic system in Harry Potter is reversed. Instead of wands being the main tool for magic, it's potions that can directly create magical effects without the need for incantations. Another could be a story where characters from different houses have to team up to solve a mystery that involves a new, never - before - seen type of magic that is slowly corrupting Hogwarts. And there could also be a fanfic where a Muggle - born discovers a way to use modern technology in combination with magic, creating a whole new form of spell - casting.
One idea could be that Hippolyta, with her Amazonian knowledge and powers, comes to Hogwarts as a visiting instructor. She could teach the students about ancient magic that has been lost in the wizarding world but is still known in her realm. Harry Potter, being the curious and brave hero, would be eager to learn from her, and they could form a bond over their shared love for magic.
One idea could be to explore what happens after Harry Potter's kids start at Hogwarts. Maybe there's a new dark force emerging that the new generation has to face, with a twist that it's related to an old, forgotten spell. Another could be to focus on a character who was always in the background in the original series, like Neville Longbottom's further adventures as a Hogwarts professor, teaching a new and dangerous subject.
One idea could be exploring the backstory of the Serpensortia spell. Maybe the fanfiction could focus on a character who discovers an ancient book that details the true origin and hidden powers of the spell. This could lead to a whole adventure as they try to keep this knowledge from falling into the wrong hands at Hogwarts.