One interesting plot could be the vampire sisters trying to fit into the Loud House family while hiding their true nature. Maybe they have to deal with the chaos of the Loud siblings while also craving blood in secret.
A really cool plot could be that the vampire sisters are on a quest to find a cure for their vampirism. They think the Loud family might hold the key to it, either through some ancient family secret or just by the way the family members interact with each other. So they live with the Louds while trying to figure out this mystery, all while dealing with their vampire instincts.
The vampire sisters' characters could develop in terms of their powers as well. At first, they might be afraid to use their powers in front of the Louds, but as time goes on, they might use them more openly for good. For instance, if there's a power outage, one of the sisters could use her ability to see in the dark to help the family find candles. And through these experiences, they become more confident and well - rounded characters within the fanfiction.
Maybe Lucy could find a way to use her vampire abilities to help her siblings in a time of need. For example, when they are facing a mysterious threat in the neighborhood, her vampire powers like super strength or the ability to turn into a bat could come in handy.
One interesting plot could be where the characters face a miscommunication problem that spreads throughout the Loud House, causing chaos. For example, a simple message gets distorted as it passes from one sibling to another.
A third plot could be centered around a time - travel aspect within the 'No Time to Spy' fanfiction. The Loud family could travel back in time to a period where there were famous spies, and they have to interact with these historical figures to stop a modern - day villain from changing history in a way that would endanger their present - day family and world.
One interesting fanfiction could be about Lincoln and his sisters going on a wild adventure together. Maybe they discover a hidden part of their town and have to work as a team to overcome the challenges there. For example, they find an old abandoned house that is rumored to be haunted. Lincoln, being the logical one, tries to find rational explanations while his sisters have different reactions, some being scared and others being overly curious. This creates a fun dynamic as they explore the house and learn more about each other along the way.
Another plot might involve a character from the 'bad luck' side of the crossover coming to the Loud House world and bringing their bad luck with them. This could disrupt the normal family dynamics. The Loud siblings would then have to figure out how to get rid of the bad luck and restore order. They might try all sorts of wacky plans, like using their own unique skills and talents in a new way to combat the bad luck.
One common theme is the vampire's struggle to fit into the Loud House family. Since the Loud House has a big family dynamic, it's interesting to see how a vampire character would interact with all the siblings and parents.
One idea could be that Lincoln accidentally gets involved in one of his sisters' school projects and they end up having to present it together. It would be full of comical moments as they try to blend their different styles and ideas. And in the end, they learn to appreciate each other's creativity more.
A third plot idea is that a group of vampire hunters come to Royal Woods believing there is a vampire in the Loud House. Lucy has to use her wits and any vampire friends she might have made to outsmart the hunters and protect her family. This could involve some really exciting chase scenes and moments of clever deception.
One possible fanfiction could be where Lori, as a vampire, struggles to keep her identity a secret within the Loud House. She might have to deal with her newfound cravings for blood while trying not to alarm her family. Maybe she forms an unexpected alliance with one of her siblings who discovers her secret and helps her find alternative ways to satisfy her thirst without harming anyone.