The main plot could be about how Peter and Gwen adjust to their new life as parents. They might face challenges like protecting their baby from super - villains who could target their family. Also, they could be dealing with normal parenting issues such as sleepless nights and diaper changes while still being superheroes on the side.
Perhaps the story could focus on the baby inheriting some of their powers. This would lead to Peter and Gwen having to teach the baby how to control and use these powers safely. They would also need to keep the baby's powers a secret from the outside world to protect the family.
Well, perhaps in the fanfiction, Peter and Gwen find an abandoned baby with some sort of special powers. They decide to take the baby in and raise it as their own. As they do so, they have to face various challenges. Enemies might be after the baby because of its powers. Peter uses his skills as Spider - Man to keep the baby safe, while Gwen provides the emotional support and care. They grow together as a family in the face of these difficulties.
Well, it could be about how Ben and Gwen adjust to their new roles as parents. Maybe they face challenges like protecting the baby from villains who might want to use the baby's special powers (assuming in the fanfic world the baby has some).
One possible plot could be that Arthur and Gwen face challenges in raising their baby in a world filled with political intrigue. Maybe there are those who see the baby as a threat or a tool for power. For example, some nobles might try to use the baby's influence to gain more land or favors. Arthur and Gwen would then have to protect their child while also ruling Camelot fairly.
It could be the Green Goblin. He might see the baby as a way to get back at Peter. Maybe he thinks that by kidnapping the baby, he can force Peter to make some sort of deal or just to cause him great pain.
In a fanfiction, it could be that an evil sorcerer casts a spell on Gwen and Arthur's unborn baby. The baby starts to show strange and dangerous symptoms. Merlin is the only one who can sense what's really wrong. He has to race against time to break the spell. He delves deep into his magic knowledge and also consults ancient magical texts. Along the way, he has to hide his actions from those in Camelot who still distrust magic, all while trying to save the baby and ensure the future of Camelot's royal family.
The baby could have Ben's adventurous spirit. Since Ben is always eager to jump into action and explore new things, the baby might show signs of that same enthusiasm from a very young age. Maybe it would constantly be trying to reach for Ben's Omnitrix - like a shiny object that fascinates it.
Their friends would probably be really excited. Harry, for example, might be a bit jealous at first but then become the baby's cool uncle. Aunt May would be over the moon and would offer lots of help and advice on raising the baby.
One possible plot could be that Peter and Gwen have a child who discovers their superhero/vigilante past. The child might start to show signs of having special abilities like Peter, and they struggle to keep it a secret at school while also trying to understand their newfound powers. Maybe they find an old enemy of Peter's is back and they have to team up with their parents to stop the threat.
Well, one possibility could be that the baby inherits some of Ben's alien powers in a really unique way. Maybe it's not as straightforward as having the Omnitrix, but has some latent abilities that start to show as it grows. And Gwen could be teaching the baby how to control any magical tendencies it might have, since she has her own magic skills.
One possibility is that the fanfiction focuses on the pregnancy journey. Gwen could be dealing with all the physical and emotional changes, while Trent is trying his best to support her. Then, when the baby arrives, it's all about the joys and fears of new parenthood.