A possible plot could be that a magical spell goes wrong and merges the two worlds of Buffy and Blade completely. Now they not only have to deal with the usual vampire threats but also with the chaos that the merged worlds bring. There are new power dynamics at play, and they must figure out how to restore order while also dealing with their own personal growth. Buffy might struggle with the darker and more gritty world of Blade, and Blade might have to adapt to the more magical elements of Buffy's world.
One idea could be that Buffy and Blade team up to fight a new type of vampire that is immune to sunlight and holy water. They have to combine their unique skills, like Buffy's slayer strength and Blade's swordsmanship and vampire - hunting technology.
One idea could be that Buffy and her friends are called to New Orleans because of some strange vampire activity that seems linked to the Originals. Maybe the First Evil from Buffy's world has some connection to an ancient threat in the Originals' world, and they have to team up to stop it.
One idea could be that the Charmed Ones and Buffy team up to fight a powerful demon that has the ability to move between their two worlds. They have to combine their unique magical powers and slaying skills to defeat it.
One idea could be that Buffy and the Bones team have to work together to solve a mystery involving a supernatural entity that leaves behind skeletal remains with strange markings. The Bones team's scientific expertise and Buffy's knowledge of the supernatural would create an interesting dynamic.
One idea could be a crossover where Naruto characters get access to special blades with unique powers. For example, Naruto could get a blade that amplifies his chakra and allows him to perform new jutsu. Another could be a story where a hidden blade is discovered in the Naruto world that has the power to either save or destroy it, and the characters have to fight over its possession.
You could write a fanfiction where the Angel Blade has a mind of its own. It communicates with the wielder in a mysterious way, guiding them towards a greater purpose. The story could then revolve around the wielder trying to understand the blade's intentions, while also dealing with external conflicts like battles against dark forces and political intrigue within their own group.
Well, there could be a story where a powerful dark magic object from the wizarding world is brought to Sunnydale. Buffy discovers it and realizes it has the power to disrupt the balance between good and evil in her world. She then travels to Hogwarts to seek help from Harry Potter. Along the way, she meets various magical creatures and has to navigate the wizarding world's politics. Once she meets Harry, they discover that there is a common enemy behind all this, someone who wants to use the chaos in both worlds for their own gain, and they must work together to stop this mastermind.
One plot idea could be that Xander gets transported into the Star Trek universe. He could use his knowledge from the Buffyverse to help the Star Trek crew deal with some supernatural - like threats that they're not used to. For example, a creature that is similar to a demon from Buffy but with a sci - fi twist.
Well, perhaps there's a spell in the wizarding world that accidentally opens a portal to Sunnydale. Buffy stumbles through and finds herself in Hogwarts. The Hogwarts students are initially confused by her, but when they see her fighting skills against the dark arts, they start to work together. Harry could learn a lot from Buffy about facing the unknown fearlessly, and Buffy could gain knowledge about magic from the wizards.
One idea could be that Buffy and her friends are transported to the wizarding world. Buffy could use her slaying skills to fight dark creatures in Hogwarts like Dementors or werewolves. Maybe she teams up with Harry and they teach each other their unique fighting styles.
One idea could be that Buffy's adult daughter discovers she has a unique slayer - like power that is different from her mother's. She could struggle to come to terms with it while also trying to live a normal life, like having a regular job and relationships. Maybe she meets a group of new allies who help her understand and control her powers.