There could be. Fanfiction writers often come up with unique and creative crossovers. However, it also depends on how popular the concept of combining 'Harry Potter' with 'Winchester' is among the fanfiction writing community. It might take some digging through different fanfiction platforms to find it.
Well, in many 'Harry Potter Lost Prince' fanfictions, the plot often revolves around the discovery of a long - lost heir or prince within the wizarding world. It could be a character who was hidden away for some dark or mysterious reason. This new character might have special powers or a crucial role to play in the fight against dark forces, much like Harry Potter himself. They may also be related to one of the well - known wizarding families, which adds a whole new layer of intrigue to the story.
Perhaps the lost king is a young wizard who was hidden away as a baby because of a dark prophecy. He has the potential to be a great and just ruler. His identity has been kept secret all these years. Harry Potter, being the hero he is, gets involved in the mystery when he notices some strange magical happenings that seem to be related to this lost king. As he digs deeper, he uncovers a web of secrets, spells, and hidden motives among different wizarding factions regarding this lost king.
In a 'Harry Potter Lost in Space' fanfiction, Harry might use his magic in unexpected ways. For example, he could use the levitation charm to move around in zero - gravity. His wand might also be affected by the space environment, perhaps glowing differently or having new powers.
It could be that Harry Potter finds himself in the world of the Lost Boys. Maybe he uses his magic to help them fight off some new dark force that threatens their home in Neverland. He might teach them some magic tricks in return for learning their survival skills in the wild of Neverland.
One possible plot could be that a character from the Harry Potter universe gets lost in the Winchester world. Maybe Harry himself accidentally uses some sort of magic that transports him to a place in the Winchester universe. He then has to figure out how to get back while dealing with the strange and often dangerous things in that world.
Well, it might be that Harry is lost at sea due to some sort of magical accident. He could meet other magical beings that are native to the sea, such as mermaids. They could either help him or pose a threat. And perhaps he has to find a way to use his Hogwarts - taught magic in new and creative ways to get back to land. He could even discover some long - lost magical artifacts at the bottom of the sea.
In addition to the core trio, Dumbledore could play an important role in the fanfiction. His wisdom and knowledge might be crucial in guiding Harry and his friends to find the lost prince. The Malfoy family could also be involved. Draco Malfoy might be in a complex situation, perhaps torn between his family's loyalties and the need to do what's right in relation to the lost prince. And there could be other Hogwarts students who get caught up in the mystery and adventure, like Neville Longbottom, who could provide unexpected help or insights.
I'm not entirely sure, but it could be that in this fanfiction, Harry Potter is lost in a community that has both Malfoy influence and some sort of mystery or danger. It could be a story of him trying to find his way out while also dealing with the complex relationships within that community. The Malfoys are often portrayed as antagonists in the original series, so this fanfiction might be playing around with the idea of Harry being in their 'territory' so to speak.
The 'Harry Potter Lost King' fanfiction might center around a prophecy. There was a king long ago who was lost in a battle or some dark magic. Harry Potter, with his penchant for getting involved in things related to the greater good, discovers that he has a role to play in finding this king. It could involve exploring ancient wizarding libraries, deciphering old spells, and enlisting the help of his friends at Hogwarts to figure out where the lost king is and what his return means for the future of the wizarding realm.