One possible plot could be that Cedric and Harry are transported to Forks for some mysterious reason. Maybe they discover the existence of vampires and werewolves there. They could get involved in the local supernatural drama while also trying to find a way back home.
Well, perhaps Harry would face new challenges in Forks. He might encounter different supernatural beings there, like vampires or werewolves. Maybe he'll form new friendships or rivalries.
In this fanfiction, it's likely that Harry's injury is a major plot point that leads him to Forks. It could be a physical injury from a battle or a more emotional/psychological hurt. Once he moves to Forks, he might find that the small town has its own secrets and mysteries. He may get involved in the local happenings, perhaps even getting caught up in the supernatural aspects of Forks if there are any in this story. And his presence could also disrupt the normal balance of the town, leading to various conflicts and resolutions.
He'll most likely meet Bella Swan. Maybe he stumbles upon her in the forest and she's initially very wary of him, but then they start to talk and find they have some similarities in terms of being outsiders in their own worlds. He could also meet the Cullens. Edward might be intrigued by Harry's magic and Harry could be fascinated by Edward's vampire abilities.
They might meet Bella and Edward from the 'Twilight' series. It would be really interesting to see how Harry and Edward interact, considering they are both kind of outsiders in their own ways. Luna could become friends with Bella, sharing their different views on the world.
Well, perhaps they move to Forks for a new start. Maybe they are intrigued by the different atmosphere there compared to their own magical world. They could explore the non - magical side of life, make new friends, and Luna might find some really interesting natural phenomena in Forks to study.
Another possibility is that there could be some corrupted magical authorities who don't want Harry and Hermione to be in Forks for some political reasons. They could send their minions to create trouble for Harry and Hermione, making them the main antagonists in the fanfiction.
It could be a powerful vampire who doesn't like the interference of Cedric and Harry in Forks. This vampire might see them as a threat to the secrecy of the vampire community in Forks.
Well, they might face a lot of new challenges in Forks. Maybe they have to adapt to the different climate and the local culture. And they could encounter new magical or non - magical creatures there.