Maybe the three biological parents were from different magical cultures. One could be a wizard from the British Isles like James and Lily, another from a far - off magical land like India or Africa, and the third from a hidden magical community in the Arctic. Harry, in this fanfic, would grow up with a unique blend of magical abilities from all three cultures, and the plot could revolve around him trying to understand and control these diverse powers while also facing the prejudices of the wizarding world that is used to more traditional family structures.
A possible plot could be that one of the three 'parents' was a powerful dark wizard who was secretly involved in Harry's creation. The other two, Lily and James, were unknowingly part of a magical ritual. As Harry grows up, he starts to notice strange powers within him that he can't explain, and as he delves deeper, he discovers the truth about his three - parent origin.
In this fanfic, the three biological parents could be the result of a time - traveling accident. One of the parents is from the past, one from the present (James and Lily), and one from the future. Harry is born with a special ability to access different time periods due to his unique parentage. The plot could be about Harry trying to prevent a great catastrophe in the wizarding world that is somehow related to his time - traveling origin while also dealing with the fact that he has three parents from different temporal zones and the implications that has on his identity and place in the wizarding world.
In the official Harry Potter lore, Harry has two biological parents, James and Lily Potter. However, in fanfic, anything can be possible. But from what we know of the wizarding genetics in the original series, having three biological parents would be a very radical departure. It would require a whole new set of magical rules regarding reproduction and genetics.
In this fanfic, a student at Hogwarts might be bullied because of their parents' status. They come across a magical ritual that is said to be able to change the very essence of a person. They decide to use it on their parents to make them more respected in the wizarding community. The ritual requires the use of a powerful magical crystal, a potion made from a basilisk's fang, and a spell spoken during a lunar eclipse. However, when they perform the ritual, it causes a rift in the fabric of magic. Dark forces start to seep into the wizarding world, and the student realizes they must fix the ritual's effects before it's too late. They embark on a journey to find ancient spells and magical beings that can help them reverse the damage and also learn a great deal about the true nature of magic in the process.
Perhaps a dark magic experiment on Harry's parents causes a magical change. They could be turned into half - human, half - magical creatures. This would make them outcasts in the wizarding society, and Harry would have to deal with the stigma associated with his parents' new forms. He might also have to find a way to reverse the change while facing many challenges and prejudices along the way.
Maybe they were forced into it by some dark magic or a powerful dark wizard. They could have been blackmailed into betraying Harry to save their own lives or the lives of others they cared about.
Well, it could be that Harry meets his parents through some magical time - turner accident. Maybe he's on a mission in the past and stumbles upon them.
One possible reason could be that in the fanfic, the author might twist the story to make it seem like his parents' actions had unforeseen consequences that affected Harry negatively. For example, their fight against Voldemort led to Harry being an orphan and having to bear a great burden from a young age.
Well, the plot could start with Harry having strange dreams about his parents. One day, while exploring an old, forbidden part of Hogwarts, he accidentally activates a spell that transports him to an alternate dimension. His parents in this dimension are leading very different lives. They could be powerful wizards involved in some grand magical plan, and Harry has to figure out how he fits into this new world and how to get back to his own dimension.
It could be that his parents were trying to protect Harry in a really messed - up way. They might have thought that by 'betraying' him, like sending him away or making him seem like an outcast, they could keep him safe from a much greater threat. Maybe they knew some prophecy about Harry and thought this was the only way to ensure his survival. They might have made a deal with some dark force, believing they could outwit it in the end but ended up being seen as traitors by Harry and others.
In this fanfic, perhaps Harry stumbles upon the portraits while exploring a hidden part of Hogwarts. He might have an emotional moment as he sees his parents for the first time in this way, and the portraits could start interacting with him, sharing long - lost memories and advice.
Well, perhaps the fanfiction could start with Harry finding a way to bring his parents back temporarily. Then he begins to teach them about the modern wizarding world. He could teach them about magical creatures they never got to see, like hippogriffs. He'd also teach them about the political situation at Hogwarts and in the wizarding community, which has changed a great deal since their time. It would be a story full of discovery for his parents and a chance for Harry to have a proper family experience.