The Amethyst Ocean might be a key element in the plot of the fanfiction. It could be a place that holds secrets related to Danny's ghostly abilities or the origin of some of the villains he faces. For example, it could be the source of a powerful artifact that both ghosts and humans are after. It might also be a place of refuge or danger, depending on how the author has crafted the story.
It can be used as a setting for important events. For example, a big battle between Danny and his enemies could take place there.
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.
He could be in a situation where he's trapped in the Ghost Zone. His friends might have to figure out a way to get to him. They could use some of Tucker's new inventions, like a Ghost Zone - traversing vehicle. They'd face many challenges along the way, such as avoiding other dangerous ghosts.
The plot could be centered around a mystery. A strange series of events start happening in Amity Park and it seems to be related to some new technology that Dr. Drakken has created. Danny Phantom investigates and runs into Shego. They start off as adversaries but as they dig deeper, they realize they need to work together to solve the mystery. Maybe there's a hidden force that is using Drakken's tech to open portals to the Ghost Zone and release dangerous ghosts, and only Danny and Shego can stop it.
Well, in the 'danny phantom is a lion fanfiction', it could be that Danny is cursed to become a lion at times. As a lion, he discovers new aspects of the ghost world. For example, there could be a group of lion - like ghosts that only communicate with him when he's in lion form, and they tell him secrets about his powers or his family's past that he didn't know before.
One possible plot could be that Izuku discovers the existence of Danny Phantom through some kind of interdimensional event. He then tries to learn from Danny's way of handling his powers and his secret identity, applying those lessons to his own journey as a hero in training.
A possible plot could be that Maddie is trying to create a device that can communicate with ghosts in a more peaceful way. Danny, being half - ghost, is both excited and a bit worried about this. Lemon, who has a more open - minded view on the supernatural, encourages Maddie. Danny then gets involved in the project, and they face many challenges along the way. For example, some other ghosts might not want humans to be able to communicate with them so easily, and they try to stop the project. This could lead to a story full of drama, with Danny having to use his powers to protect Maddie and Lemon while also trying to support Maddie's scientific goals.
She could face a lot of challenges. For example, she might be shunned by some in the ghost world because of her half - human heritage from Danny. Or she could struggle to fit in with humans because of her ghostly powers. It would be a complex situation for her to navigate.
The plot could involve some sort of mystery related to the pregnancy. Like, there could be a ghostly force that is either helping or hindering the pregnancy. And they have to figure out what it is and how to deal with it. Also, their friends like Tucker could play important roles in supporting them.
His ghost - hunting parents could potentially betray him. If they found out Danny was half - ghost, they might see him as a threat to humanity rather than their son. They've been so dedicated to hunting ghosts that their views could be clouded, and they might not be able to accept Danny for what he is, leading to a heartbreaking betrayal for Danny.