In a 'bella as marcus's daughter fanfic', the plot could revolve around Bella getting involved in the vampire politics because of her relation to Marcus. The other vampire clans might see her as a threat or an asset. She would then have to navigate this dangerous world of power struggles and alliances. At the same time, she could be falling in love with a human or a vampire from a different clan, adding a romantic subplot to the story.
She might be more confident. Since she's Marcus's daughter, she could have a sense of entitlement and power that the normal Bella lacks. For example, she might not be as shy around vampires as she was in the original story.
Well, the plot could involve Bella being an orphan who is adopted into the town. She might have a mysterious past that has her on the run from some dark force, and Charlie just takes her in out of kindness. This would change her relationship with the Cullens too, as she wouldn't have the same family ties to the town.
One possible plot twist could be that the children possess unique powers that threaten the Volturi's traditional power structure. For example, they might be able to nullify the powers of the Volturi leaders, creating a power struggle within the coven.
In this fanfic, it could start with Bella suspecting she is pregnant. Marcus is initially in disbelief. As they confirm the pregnancy, they go through a rollercoaster of emotions. They could have different ideas about how to raise the child, for example, Marcus might want a more traditional approach while Bella is thinking of a more modern and free - spirited upbringing. They have to work through these differences and come together for the sake of their unborn baby.
Well, it could be a story about family secrets. Maybe Bella has just discovered that Billy is her father and she has to deal with the shock of this new information while also getting to know Billy and his side of the family.
In a 'bella is thor's daughter fanfiction', the plot could involve Bella being whisked away to Asgard. There, she has to learn about her father Thor and the ways of the Asgardians. She might get into trouble with the other Asgardians who are skeptical of her because she's from a different place. But as she proves herself, she could form alliances and help Thor in some great battle or quest, all while coming to terms with her new identity.
One possible plot could be Bella growing up not knowing who her father is. Then, as she discovers her true identity, she has to decide whether to follow in Voldemort's dark footsteps or rebel against him. She might face a lot of internal conflict as she tries to balance her own values with the legacy of her father.
Well, it could be about Damon having to protect Bella from the various threats in their supernatural world. Maybe she has some unique powers that draw unwanted attention.
One possible plot could be Bella growing up in a world filled with the supernatural elements that Rebekah is a part of. Maybe she discovers her powers early on and has to learn to control them while also dealing with the complex family dynamics of being Rebekah's daughter. For example, she might face the expectations of the vampire community that Rebekah is associated with.
Well, it could be about Bella trying to break free from her father's, the Joker's, evil influence. Maybe she has a good heart in contrast to him and wants to use her skills for good, like helping Gotham in a more positive way.