Well, it could be a really strange and magical plot. Maybe Harry has some sort of time - travel or magical transformation that makes him Fleur's mother in an alternate reality. It could involve a lot of confusion as characters try to understand this new relationship dynamic.
One possible plot could be that Harry and Fleur end up living together due to some post - war arrangements. They might initially have a bit of a cultural clash as Fleur is part - Veela and has her own French - influenced ways, while Harry is very much a product of the British wizarding world. But over time, they learn from each other and become friends. Harry could be teaching Fleur about some of the more unique aspects of Hogwarts' history that she might not know, and Fleur could be showing Harry some of the beautiful magic she learned in Beauxbatons.
It could be that they leave to attend a special magical training that is only available in a very secluded place. They might have received an invitation from a very powerful and reclusive wizard. This training could enhance their magical abilities in ways that Hogwarts or Beauxbatons couldn't. They see this as an opportunity to become stronger and more self - reliant, so they leave together, excited for the new challenges and knowledge that awaits them.
One possible plot could be that Fleur has been influenced by some dark magic or a powerful enemy. Maybe she's being blackmailed to kidnap Harry. She might take him to a hidden location, perhaps an old, abandoned castle. Then, the story could revolve around Harry trying to figure out why Fleur did this and how to escape while also dealing with Fleur's internal struggle about what she's done.
Well, perhaps the plot could start with Harry being magically transformed into an animal and Fleur finding him. She decides to take him in as a pet. As time goes on, Harry in his animal form might start to understand Fleur in a different way than he did as a human. And Fleur might discover that this 'pet' has some strange and powerful abilities.
One possible plot could be that in the wizarding world, Fleur is in some kind of danger. Maybe she's being targeted by dark wizards who are after her Veela heritage. Harry, being a well - known and powerful wizard, is assigned as her bodyguard. Along the way, they start to understand each other better. Harry learns about the unique aspects of Fleur's Veela nature, and Fleur sees Harry not just as the 'Boy Who Lived' but as a real person with his own insecurities. They might face various challenges together, like escaping from traps set by the dark wizards and also dealing with the public perception of their relationship as bodyguard and protectee.
One possible plot could be that Fleur is initially shocked when she sees Harry's scars. It might lead to a deeper understanding between them. Fleur could start to see Harry in a new light, as someone who has endured great pain. This could develop into a friendship where she is more protective of him, or it could even potentially lead to a romantic interest as she is drawn to his strength in the face of such visible reminders of his past battles.
The plot could revolve around a prophecy. In the fanfiction world, a new prophecy could surface that links Harry's future to Fleur's cousin. This prophecy might state that their union is crucial for the long - term peace and stability of the wizarding world. Harry, always ready to sacrifice for the greater good, might initially approach the relationship with a sense of duty. However, as time passes, he realizes that he truly loves Fleur's cousin. Their relationship could face challenges from those who oppose the idea of a relationship based on a prophecy, but they overcome these difficulties together.
It's a rather unique concept for a fanfiction. To find relevant works, you can also try using more general search terms related to the Harry Potter universe and the characters involved. Sometimes, even if the exact 'Harry is Fleur's mother' tag isn't used, the story might still incorporate this strange relationship idea. So, look for stories that play with family relationships and magical elements within the Harry Potter world.
In this fanfiction, the vampire could be an old acquaintance of Fleur from her Beauxbatons days. He was once a student there who got turned into a vampire later. Harry gets involved when he notices some strange happenings around Fleur. The three of them then get caught up in a mystery that involves a powerful dark magic item. They must work together, with Harry using his Gryffindor courage, Fleur her Veela charm, and the vampire his immortality - related skills to solve the mystery and keep the item from falling into the wrong hands.
One possible plot could be that they meet secretly in the Forbidden Forest. Fleur might be drawn to Harry's courage and Harry could be intrigued by Fleur's beauty and unique charm. They start sharing their secrets, like Harry telling Fleur about his struggles with Voldemort that he doesn't share with others. Their relationship grows as they find solace in each other's company away from the prying eyes of Hogwarts and the wizarding world.