What are some interesting plot ideas for Percy Jackson and Rosalie Cullen fanfiction?

Perhaps in the fanfiction, Rosalie has a premonition about Harry's future battles. She decides to travel to the wizarding world to warn him. Along the way, she has to adapt to the strange wizarding customs. Once she meets Harry, they initially have some misunderstandings due to their very different backgrounds. But as they get to know each other better, they form an alliance to face the upcoming danger together. Harry learns to see vampires in a new light, and Rosalie discovers the beauty of the wizarding world's magic.

For Percy, you could explore his growth in a world outside of his normal demigod realm. Meeting Rosalie could make him more aware of different forms of immortality and power. Maybe he starts to question his own mortality in a different way. For Rosalie, her encounter with Percy could soften her edges a bit. Since Percy is more in touch with his emotions, she could learn from him and become more empathetic towards others, not just her vampire family.

One plot idea could be Percy having to team up with Hera to rescue a group of demigods who have been captured by an ancient monster. Hera, despite her usual aloofness, realizes she needs Percy's unique skills.

In some fanfiction, there might be a scenario where Percy is sent to Forks for some reason and ends up meeting Edward. They initially clash because of their different worlds and natures. Percy is used to the world of Greek gods and monsters, while Edward is part of the vampire - human world. But then they find common ground in protecting their loved ones and the town from a new threat.

One idea could be Percy and his friends getting trapped in a virtual game world that's a twisted version of their own. They have to use their demigod skills to defeat the digital monsters and find a way out.

Maybe Percy is sent on a quest to Atlantis because there are rumors of a traitor among the Atlanteans who plans to side with the Titans. Percy has to navigate the complex political situation in Atlantis and figure out who the traitor is before it's too late. He also has to deal with the Atlantean magic which is different from what he's used to.

One idea could be that Percy discovers a hidden realm within the world of the Wanderer. This realm has its own set of rules and challenges that he has to navigate. Maybe he meets new demigods there who have been lost for centuries.

One idea could be Percy having to make a deal with a minor underworld god to save Annabeth from a new and strange curse that's slowly draining her life force. He has to complete a series of tasks in the underworld that test his loyalty and courage more than ever before.

Well, perhaps the shield was once owned by a powerful demigod from the past. In the fanfiction, Percy starts having strange dreams about this demigod and the shield's true origin. As he investigates, he realizes that the shield holds the key to defeating a new, emerging evil that threatens not just Camp Half - Blood, but the entire world of gods and mortals. So, he has to figure out how to unlock the shield's full potential.

Here's an idea. Emma could be a mortal who accidentally stumbles upon the world of demigods. Percy is tasked with protecting her while also trying to keep the secret of the demigod world from getting out. As time passes, Emma shows an uncanny ability to understand the demigod world, almost as if she has some latent demigod blood in her. They develop a bond as they face various monsters and challenges sent by the gods who are not happy with a mortal being so involved. Their relationship could be a mix of friendship and something more as they go through these experiences together.