The main villain could be an older and more powerful version of Vlad. Maybe he has finally perfected his cloning techniques and created an army of half - ghost clones. He could be more devious and have a grand plan to take over both the human and ghost worlds.
Well, perhaps in the future, Danny and Sam get married. They have a family and are trying to live a normal life, but their past as ghost hunters keeps coming back. Their kids start to show signs of having special powers or an interest in the supernatural. Sam and Danny then have to teach them about the world of ghosts while also protecting their family from old enemies that resurface.
The main characters would obviously be Danny and Sam. Danny, with his ghost - fighting abilities as Danny Phantom, is a key figure. He can fly, become invisible, and has super strength among other powers. Sam, on the other hand, is Danny's strong - willed and intelligent friend. She is often the voice of reason and also has a deep knowledge of the supernatural which helps in their adventures.
Well, a great plot for Danny Phantom future fanfiction could be that Danny discovers a way to travel to different dimensions in the Ghost Zone. In these dimensions, he finds versions of himself with different powers and personalities. He then has to figure out how to use this knowledge to save his own dimension from a powerful ghost that is slowly draining the life force of the living world. It could involve a lot of self - discovery for Danny as he learns from his other - selves.
Another idea is that the future kids are faced with a new threat that is a combination of old ghost enemies and a new technological menace. They have to learn to use both their ghost powers and modern technology to combat it. For example, they might use holographic devices to trap ghosts while using their in - born powers to weaken them.
Another interesting idea is that Danny's future children are born with a special connection to the human world and the ghost zone. They can act as ambassadors between the two realms, trying to bring peace and understanding. But there are those in both worlds who oppose this idea, creating conflict and drama for the story.
In this fanfiction, it could be that Danny Phantom meets a Danny Phantom from a parallel fan - made story. At first, they don't trust each other. But as they learn more about each other's worlds, they realize that there are some common elements that are being threatened. It could be that a powerful ghost is trying to rewrite all the fanfic universes related to Danny Phantom. So, they must combine their strengths and knowledge to stop this from happening.
Well, in this kind of fanfiction, Danny could be controlled by an ectoplasmic parasite. The parasite latches onto Danny and takes over his actions. His eyes might glow a different color to show he's not in control. His friends would first be confused, then realize something is amiss and start investigating.
Another possibility is that he's facing some emotional turmoil. Danny has a lot on his plate. He has to keep his identity a secret from his friends and family, deal with school, and fight ghosts. All this stress could be causing him to lose his appetite. He might be too worried or preoccupied to even think about food.
One possible story could be that Danny is facing a new and extremely powerful ghost. He needs help from his friends Tucker and Sam. Maybe they need to find a rare artifact to defeat this ghost. They could start by researching in the local library, looking through old ghost lore books. Tucker uses his tech skills to try and track down any leads on the artifact's location, while Sam uses her knowledge of the occult.