What could be the plot of a Vampire Diaries fanfiction centered around Caroline's brother?

He could be portrayed as a brave and resourceful character. For example, when faced with vampire threats, he uses his wits and knowledge of the town to outsmart them. He might also be shown as having a strong sense of loyalty to his sister Caroline, always ready to stand by her side even in the most dangerous situations.

She could be kidnapped by a group of rogue vampires who think they can use her to gain leverage over the headmaster. Her friends, both human and vampire, would then have to team up to rescue her. During her captivity, she might learn some secrets about the vampires that could change the way she views them.

A plot could be that Kaname's sister discovers a long - lost vampire power that has been dormant in their bloodline. She decides to use this power to bridge the gap between the pureblood vampires and the lower - level vampires. This causes some purebloods to oppose her as they fear a change in the power structure. But she is determined to bring about a new era of peace and coexistence among vampires.

It could be Klaus. Given their complex relationship in the series, it's possible that in fanfiction, they had a moment that led to her pregnancy. Klaus has always had a certain fascination with Caroline, and this could be an interesting twist to their story.

Another possibility is that she was poisoned. There could be a new type of poison in the 'Vampire Diaries' world that affects vampires in a deadly way. And Caroline, being a vampire, was unable to resist it. Or, it could be related to the ongoing power struggles between different vampire factions. She might have been caught in the middle and killed as a result.

One possibility could be that Klaus, being his possessive self, tries to protect Caroline during her pregnancy. He might use his power and resources to keep her safe from all the threats in the Vampire Diaries world, like other vampires or werewolves who might see a pregnant Caroline as an easy target or a threat to their power dynamics.

A great plot could be that Daenerys' twin brother is kidnapped as a baby and raised by the enemies of the Targaryens. He is taught to hate his own family, but as he grows older, he starts to question his upbringing. He eventually discovers his true heritage and has to make a choice. Does he stay with the people who raised him or does he side with his sister Daenerys? This internal conflict could be a major part of the fanfic, along with the external battles they face together.

One interesting plot twist could be that the father of Caroline's baby is a long - lost relative of an original vampire. This would bring in a whole new level of drama as different vampire factions might try to either protect or harm Caroline and her unborn child depending on their own motives.

One idea could be that Enzo and Caroline team up to solve a mystery in Mystic Falls that's related to an ancient vampire curse. They might discover that their combined powers are the key to breaking it.

A simple plot could be Luka finding out about Ladybug's true identity by accident. He then has to keep this secret and at the same time, use his knowledge to help her out in more subtle ways, like providing a safe place for her to transform when she's in a tight spot.