One idea could be that Kol and Elena are in a forbidden love situation. Maybe in a world where the supernatural factions are at odds, and their relationship is seen as a threat to the balance. Another could be a time - travel plot where Elena goes back in time and meets a younger Kol, changing the course of their relationship.
A plot could involve Elena and Kol having to deal with an ancient prophecy related to their unborn child. They have to figure out what it means and how to prevent any negative consequences. Along the way, they learn more about each other's pasts and how their families' histories are intertwined with this prophecy, which makes them more determined to protect their family.
One idea could be that the baby has special powers due to Kol and Elena's unique heritages. For example, it might be able to control both vampire and witch magic in a new way. Another plot could involve the baby being a target by various supernatural forces who either want to use its power or destroy it out of fear. And perhaps the baby's existence could bring about a new era of peace or chaos in the supernatural world, depending on how it's raised and the choices it makes as it grows up.
Well, perhaps they could start a new life away from all the chaos in Mystic Falls. They build a home together in a far - off place and discover new abilities or powers that come with their union. For example, Elena might gain some of Kol's vampire powers in a unique way. They also face challenges like normal married couples, such as learning to live with each other's habits and quirks.
One plot idea could be that Kol returns after a long absence and tries to win Elena back from Damon or Stefan. He could use his unique vampire powers and knowledge to show Elena a different side of the vampire world. Another idea is that Kol and Elena get trapped in a magical realm together and have to rely on each other to escape, during which they discover their true feelings for each other. Or perhaps Kol is cursed and Elena is the only one who can break it, and through their journey to break the curse, love blossoms.
In fanfiction, Kol and Elena's love often brings a unique dynamic. It can show Kol's more complex and passionate side. Their relationship might be explored in different settings, like in a modern AU where they meet in a different context than in the show. It allows for creative interpretations of their personalities and how they interact.
One possible plot could be that Kol kidnaps Elena to use her as bait for his enemies. He might think that by having Elena in his custody, her friends, especially the Salvatores, would come to rescue her and he could then ambush them. Another idea is that Kol has some sort of vendetta against Elena because of her connection to the doppelganger bloodline. So he kidnaps her to extract revenge on the entire line.
The plot might involve Kol falling in love with Elena. Kol, being the wildcard among the Originals, could try to win Elena over in his own unique way, which might create a lot of drama with the other characters like Damon and Stefan who are also interested in Elena.
Well, they could start a new life away from all the chaos. They find a peaceful place where no one knows them and try to raise their baby in secrecy. But then, their past catches up with them. Maybe an old enemy of Kol's discovers their location. Another angle is that the baby has some unique powers even before birth, and this attracts the attention of both good and bad elements in the supernatural world. Bonnie and Kol then have to figure out how to handle this situation without putting their baby in danger.
Well, the baby could be born with a condition that requires it to be in a certain magical environment to survive. This would lead the Mikaelsons on a quest to find and create such an environment. And what if the baby's presence starts to change the power dynamics in the supernatural community? Some might see it as a threat while others as a new hope for a different kind of future.
A plot could revolve around Bella and Kol getting married in secret and then having to face the reactions of their families and friends. Kol's family might be skeptical or even against it at first, thinking Bella is not a suitable match. Meanwhile, Bella's friends from Forks might be shocked to find out she's married to an original vampire. They then have to work through these relationship issues while also dealing with threats from other vampires or supernatural entities who see their union as a threat or an opportunity.