In this type of fanfiction, a possible plot is that the Death Eaters and the Order of the Phoenix members are forced to live together in a 'Big Brother' style house. They have to follow certain rules set by the magic of the house. There are tasks related to both dark and light magic. The characters have to balance their own beliefs and goals while also trying to win the overall competition. This creates a lot of tension and interesting character interactions as they all have very different motives.
In some fanfictions, the older brother could be an outcast from the wizarding world due to a misunderstood magical ability. He then takes Harry under his wing and shows him a different side of magic, one that is not taught at Hogwarts. They might go on adventures together outside of the school, exploring ancient and forgotten magical places, and in the process, the older brother helps Harry become a more well - rounded wizard.
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.
Perhaps the plot could involve the Hogwarts houses competing like 'Big Brother' contestants. Each house has to strategize, form alliances, and complete tasks to avoid being 'evicted'. Harry could be a key player in Gryffindor's strategy.
A cool plot could be that they are brought together by a prophecy. Percy's skills with water and Harry's magic would be combined to defeat an ancient evil. They might start by being suspicious of each other, but as they learn about their shared heritage, they grow closer. Also, there could be a plot where they have to deal with the politics of both their worlds. How would the wizards react to the existence of demigods and vice versa? This could lead to some really interesting character interactions and story developments.
One interesting plot idea could be exploring what would happen if Harry had a different upbringing, like being raised by the Malfoys. It would completely change his view of the wizarding world and his relationships. Another idea might be a time - travel fanfic where Harry goes back to the Marauders' era and interacts with his parents and their friends. This could lead to him preventing certain tragedies or changing the future in unexpected ways. And then there's the concept of a fanfic where the roles are reversed, and Voldemort is the one trying to protect the wizarding world from a greater evil, with Harry being the main antagonist.
A traveler could be from a different magical realm entirely and come to the Harry Potter universe. They bring with them unique magical abilities that both fascinate and frighten the wizards in the Harry Potter world. This could lead to a series of adventures where they either share their knowledge or are hunted down by those who fear the new magic they possess.
One idea could be that Hecate, being the goddess of magic, takes Harry Potter under her wing secretly to teach him ancient and powerful magic that Dumbledore doesn't know. This could lead to Harry having new abilities to fight Voldemort.
A possible plot in Harry Potter Planeswalker fanfiction is that a Planeswalker accidentally brings a dangerous creature from another plane into the Hogwarts grounds. This causes chaos as the teachers and students have to figure out how to deal with it. It could also be that a Planeswalker has a special connection to the magic in the Harry Potter world, like being able to sense the presence of magic in a way that wizards can't. They could use this ability to discover hidden secrets about Hogwarts or the wizarding families. Maybe a Planeswalker is on a quest in the multiverse and the Harry Potter world is just one stop on their journey, and their actions in the wizarding world have consequences for their overall mission.
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.