One plot idea could be that Alaric and Caroline team up to solve a mystery in Mystic Falls. Maybe there's a new supernatural threat that the other characters are oblivious to, and they have to use their combined knowledge and skills to figure it out. Another could be a story where Alaric becomes Caroline's mentor in something, like teaching her more about history or how to handle certain magical artifacts. It could also be a story where they get trapped in an alternate dimension together and have to find their way back while dealing with their own personal issues and growing closer in the process.
A possible plot is that Alaric discovers Caroline has a hidden power and he helps her develop it. They could go on a journey to find someone who can teach her how to control it better. Or perhaps there's a prophecy that involves both of them, and they have to figure out how to fulfill it or avoid it depending on the nature of the prophecy. They might also start a business together, like a supernatural - themed bar or a school for young witches and vampires in training, and the story could revolve around the challenges and successes they face in that venture.
Perhaps a fanfic where Alaric, after his many experiences, decides to train Elena in some unique combat and survival skills. This could lead to a strong bond between them as they spend time together training and sharing their stories.
Romance can also be a theme, although it might be a more complex and nuanced kind of romance given their relationship in the original story. Some fanfics explore the possibility of a deeper romantic connection between them, delving into their feelings and how they might navigate a relationship in the face of various obstacles and social expectations.
One great 'Alaric and Caroline Fanfic' is 'The Unlikely Bond'. It explores their relationship in a unique way, with a plot full of mystery and friendship development. Another good one could be 'A New Chapter for Alaric and Caroline' which delves into how they support each other through tough times in a fictional post - show scenario.
One idea could be that Klaus and Caroline initially struggle with the news. Klaus is worried about his enemies using Caroline and the baby as a target. Caroline, on the other hand, is determined to protect her unborn child at all costs. They might go into hiding together, which would lead to some sweet and tender moments between them as they get to know each other on a deeper level away from the chaos of their normal lives.
Well, one possibility could be that they decide to have a small, intimate wedding. Maybe they choose a beautiful outdoor location like a secluded beach or a charming garden. Their friends from the supernatural world would all be there, with Damon making some snarky but heartfelt toast about how he never thought he'd see this day. And Caroline would look stunning in a simple yet elegant white dress.
One great Caroline and Alaric fanfiction could be 'A New Beginning' where they go on an adventure together and their relationship develops in unexpected ways. It has a really interesting plot that keeps you hooked.
For Alaric, his character could be developed further by exploring his past traumas more deeply. Maybe he has some unresolved issues from his time as a vampire hunter that resurface when he's around Caroline. For Caroline, her character could grow by having her face more complex moral dilemmas. For example, if she has to choose between helping Alaric or following the rules of the vampire community. They could also develop their relationship by having them share more personal stories and secrets with each other.
You can try some fanfiction websites like Archive of Our Own (AO3). There are a large number of fanfics about Caroline and Alaric on it. Just search for their names in the search bar, and you'll get a list of relevant stories.
Perhaps in the fanfiction, Caroline is pregnant in a world where there are magical or supernatural elements. She could be pregnant with a special child that has unique powers, and she has to protect it from those who might want to use its power for evil.
Another plot could involve a mystery that Caroline and Kate have to solve together. It could be something related to the history of Halifax. As they dig deeper into the mystery, their bond grows stronger. They might have to face some difficult decisions during the process, which would test their relationship.