Another plot could involve her struggle to fit in with normal society while having this extraordinary phantom - related background. She may face discrimination or misunderstanding from others, but in the end, she manages to find a group of people who accept her for who she is.
One interesting plot could be the phantom's hidden past. Maybe it reveals that the phantom was once a normal student who was wronged and turned into a phantom. Another plot could be the phantom's relationship with a particular character, like a friendship or a rivalry that develops in unexpected ways.
One interesting plot could be the phantom having a hidden past related to an ancient Hogwarts mystery. Maybe it was once a powerful wizard who was wronged and now haunts the school for revenge or to right a wrong.
One possible plot could be that Danny is kidnapped by a new ghost enemy who wants to use his powers for their own evil deeds. Maybe this enemy plans to drain Danny's ghostly energy to become more powerful. Another plot could involve Danny being kidnapped by a group of his human enemies who have finally discovered his secret identity and want to experiment on him. Or perhaps a time - traveling villain kidnaps Danny to prevent him from ever becoming a hero in the future.
One possible plot could be that Danny's sneeze accidentally activates a new ghost power. For example, every time he sneezes, he temporarily gains the ability to phase through different dimensions. This could lead to all sorts of adventures as he tries to control this new and unexpected power while also dealing with his regular ghost - fighting duties.
Maybe Danny and a ghost enemy are stuck together due to some strange ghostly spell. This forces them to understand each other better as they try to break the spell. As they are stuck, they start to see the other's point of view, which could lead to an unexpected friendship or at least a truce.
One possible plot could be that the evil Danny Phantom tries to manipulate Sam into helping him take over the Ghost Zone. He might use his powers to deceive her at first, but Sam gradually realizes his true intentions and has to find a way to stop him.
Well, one interesting plot could be Danny finally revealing his secret to his best friend Tucker in a really dramatic way. Maybe it's during a ghost attack and he has no other choice but to show his powers to save Tucker. Another plot might involve Danny's parents finding out his secret through some accidental discovery in their own ghost - hunting experiments.
Well, in some 'Danny Phantom Adopted by Ghosts Fanfiction', a possible plot is Danny forming unexpected alliances with other ghostly beings as a result of his adoption. He could team up with some outcast ghosts to fight against the more malevolent ones. Also, his adoption might lead to a series of adventures where he explores different ghost realms that were previously unknown to him. It could be really exciting as he discovers new landscapes, creatures, and mysteries in these realms. And perhaps, there is a plot where Danny has to prove himself worthy of his new ghost family in the face of some ancient ghostly trials.
In a more emotional plot, Danny has lost his family in some ghost - related incident and is all alone. Batman, seeing a kindred spirit in Danny (both having experienced loss), decides to adopt him. Danny then has to adjust to living in the Batcave and being part of Batman's crime - fighting family. He struggles with fitting in at first but eventually finds his place and becomes an important asset to the team, using his powers in ways Batman hadn't thought of before.
Another plot could be that she gets transported back in time to when her father was in his prime at the opera house. There, she has to navigate the complex relationships and rivalries of that era while also trying to find a way back to her own time. Along the way, she forms a unique bond with her father that she never had before and learns from his experiences, which in turn changes her perspective on her own life.