Fanfiction about Harry Potter having a different father: What are some interesting plot ideas?

One idea could be that Harry's new father is a powerful wizard from a different magical society. This could introduce new types of magic and cultures into the story.

One plot idea could be that Harry's sister is secretly a powerful witch with unique abilities. For example, she might have the power to communicate with magical creatures in a way no one else can. This could lead to her getting involved in a plot to save a rare and endangered magical creature that is being hunted by dark wizards. Another idea is that she discovers a hidden prophecy related to her and Harry that changes the course of their fight against Voldemort. She could be the key to a new spell or magic that can defeat Voldemort once and for all.

One plot idea could be that the nanomachines are secretly placed in Hogwarts by a dark wizard. They start to manipulate the magic in the school, causing strange things to happen like spells going haywire. Harry, with the help of his friends, has to figure out how to stop the nanomachines before they destroy the balance of magic at Hogwarts.

She could inherit some of the traits from Harry's past enemies in a strange way. Maybe she has a bit of Voldemort'sParseltongue ability which scares her at first. But then she learns to use it to her advantage, like being able to enter hidden areas where only Parseltongue speakers can go. This could lead to her finding lost magical artifacts that have been hidden away for centuries. Also, her relationships with her classmates could be complex. Some might be jealous of her, while others might try to use her for her father's fame.

Well, perhaps his husband is a powerful auror as well. They team up to fight against a new dark force that is emerging in the wizarding world. Their relationship adds an extra layer of depth to their fight as they not only have to protect the world but also their relationship. They might face challenges from traditional wizarding families who are not accepting of their relationship at first.

A great plot idea is a fanfiction where students from different schools participate in an international magical competition. Harry Potter could be a part of the Hogwarts team. During the competition, he realizes that the students from other schools have different ways of approaching magic. For instance, the students from a school in Africa might use magic that is more in tune with nature. This makes him question his own understanding of magic and he starts to incorporate some of their techniques into his own practice. Also, there could be a mystery surrounding the origin of the competition that the characters have to solve.

One plot idea could be that Harry discovers a baby dragon in the Forbidden Forest. He decides to hide and protect it from the Ministry, which would want to destroy it. As the dragon grows, it helps Harry in his battles against the Dark Arts, using its powerful fire-breathing ability to fend off Death Eaters. Another could be that the dragon is a shape - shifter and can turn into a human form, becoming Harry's closest confidant at Hogwarts, sharing secrets and helping him solve mysteries.

One plot idea could be that the lost sister was separated from Harry during the attack on their parents. She could be raised in a different magical family, and when she discovers her true identity, she has to navigate between her new family and her connection to Harry. Another could be that she was hidden away by Dumbledore for her own protection and has unique magical abilities that Voldemort wants to use. When she enters the wizarding world, she becomes a target but also a powerful ally to Harry.

One plot idea could be Harry discovering a new, ancient magic that gives him an extreme boost in power. He could use this power to reform the wizarding world's laws for the better. Another could be that Harry has a power transfer from an old, powerful wizard and has to learn to control it while facing new dark threats. Maybe he uses his newfound power to create a school for underprivileged young wizards and witches.

One idea could be that Harry's lack of emotions makes him an enigma at Hogwarts. His friends are constantly trying to figure out what's wrong with him. Another could be that in the face of danger, like when facing Voldemort, his lack of fear or any emotion confounds his enemies. Maybe he can use this to his advantage in battles, making unpredictable moves.