What could be the plot of a fanfiction where Bella Swan is the princess of hell?

Sure, it's very possible. In fanfiction, the sky's the limit. Writers might imagine Bella Swan in this role to explore different aspects of her character. For example, she could be a reluctant princess of hell, trying to bring some sort of order or goodness to the chaotic realm. Or perhaps she was sent there by some dark force and has to find a way to escape while also dealing with her newfound status. There are countless directions a story like this could go.

One possible plot could be that Bella discovers her new banshee powers after some strange and traumatic event. Maybe she starts having premonitions not just about danger to herself like in the original Twilight series, but about disasters that will befall the entire town. This could put her in a position where she has to figure out how to control these powers and also how to convince others, like the Cullens, that she's not going crazy.

It could be about Bella Swan discovering her true identity as a moon princess. Maybe she has some special powers related to the moon that she has to learn to control.

Maybe Bella Swan discovers Cortez's work and it changes her perspective on something. For example, if Cortez is an artist, his art could inspire Bella in her own life in Forks.

Well, it could be that Bella is secretly an assassin all along in Forks. She's using her relationship with Edward as a cover while she's on a mission to take out some supernatural threats in the area.

One possible plot could be that Bella Swan, in this fanfiction, becomes a huge admirer of the Gilbert family. Maybe she is intrigued by their history in the town. She could start to study their family tree, trying to understand the secrets they hold. This could lead her to befriend members of the Gilbert family and get involved in their daily lives, which might be full of both normal family drama and some supernatural elements as in the original 'Twilight' and 'The Vampire Diaries' universes where the Gilberts are from.

Maybe Bella Swan could be transported to Asgard. She might be mistaken for a powerful sorceress because of her unique connection to the Twilight world. Then she has to navigate the politics of Asgard while trying to find a way back home.

The plot could involve Bella being raised in the Twilight world without knowing her real mother. Then, through some magical event, she finds out she's Bellatrix's daughter. This could lead to a conflict as she tries to figure out where she truly belongs, between the two very different worlds of vampires and wizards. Also, there could be a plotline where she has to face the dark legacy of her mother and decide whether to embrace or reject it.

Yes, there are likely fanfictions out there with this concept. Fanfiction writers often take existing characters like Bella Swan and create unique scenarios for them, such as making her a moon princess. You can search on popular fanfiction websites to find such stories.

Well, it could involve Bella having special powers from being Poseidon's daughter. Maybe she can control water to protect Forks from some new supernatural threats. She might also have a connection to the ocean that draws her away from the normal vampire - human drama in the original 'Twilight' story.