The plot might involve Elijah having some sort of special connection to Bella. He could be her protector by some pre - ordained fate. Perhaps he has been watching over her all along and when the moment of crisis comes, he steps in. He might have to fight off other supernatural beings who are after Bella for some reason, like her unique powers or knowledge she holds.
In this fanfiction, Elijah could be saving Bella from a self - destructive path as well. Maybe she has fallen into a deep depression or is making bad choices. Elijah, with his wisdom and experience, manages to guide her back to a better place. He might use his charm and understanding to get through to her and prevent her from doing something she'll regret.
Obviously, Elijah and Bella are the main characters. Elijah is likely to be the hero or the savior in this story. He probably has some special abilities or qualities that enable him to save Bella.
It could also focus on their personal growth within the marriage. Bella might have always been a bit shy and Elijah helps her come out of her shell. He encourages her to pursue her dreams, like starting her own small business. In turn, Bella helps Elijah become more in touch with his emotions and they both become better versions of themselves through their relationship.
Another aspect to consider is the context of the story. Is it set in a particular fictional universe that we know? If so, that will shape the events. For instance, if it's in a vampire - werewolf world like Twilight (assuming Bella is from that universe), Peter might be saving her from a vampire attack or something related to the complex politics of that world. The fanfiction could also deviate from the original source material in many ways, creating a unique story around Peter saving Bella.
Often, it could involve Bella making sacrifices. She might put herself in danger to draw the enemy away from the pack. Since she has a connection with the pack members, she could also use that emotional bond to rally them and give them the strength to face a difficult situation.
In 'Jared Saves Bella' fanfiction, the plot could center around a unique bond between Jared and Bella. It could start with Bella getting into a scrape that her usual protectors can't handle. Jared might sense her distress and step in. For example, if there's a new evil force in Forks that targets Bella, Jared could use his strength or knowledge of the area to save her. He might also have some personal reasons for wanting to protect her, like a long - hidden admiration or a sense of duty.
One possible plot could be that Bella and Elijah face challenges from the vampire and werewolf communities. Their relationship might be seen as an oddity or a threat. For example, other vampires could be jealous of Elijah's relationship with Bella, or werewolves might see Bella as a target because of her connection to a powerful vampire like Elijah.
Well, it could involve Bella discovering her true heritage as Elijah's daughter. Maybe there are conflicts with other characters who have different intentions regarding her. For example, some might want to use her for power, while she just wants a normal life.
A possible plot could be that Bella and Elijah are from different species in the fanfiction world, for example, one is a vampire and the other a werewolf (assuming such a scenario exists in this fanfic). Their pregnancy is then a very unique situation that defies the norms of their world. This could lead to a lot of drama, with different factions either trying to protect or harm them because of the baby. They would have to rely on each other and a few trusted friends to navigate this new and dangerous situation.
One characteristic is the exploration of a unique relationship. Since Bella and Elijah are from different fictional worlds or storylines, fanfictions often focus on how they bridge that gap. For example, they might have to overcome differences in their powers or social standings.
One common theme is the clash of different worlds. Bella comes from a more 'human' world with certain values and beliefs, while Elijah is from the complex vampire world. Their marriage forces them to reconcile these differences. Another theme is the idea of love conquering all. Despite the odds and the differences between them, their love is what holds them together in these stories.