Perhaps the plot could center around Mal's pregnancy as a sign of hope for a new era in Auradon. But there are those who oppose it, seeing it as a threat to the status quo. Mal has to fight for her right to have the baby and raise it in the way she wants. She might also have to face her own insecurities about being a mother, especially considering her own upbringing on the Isle of the Lost.
One possible plot could be that Mal discovers she's pregnant and has to keep it a secret at first. She's worried about how Ben and the people of Auradon will react. As she tries to hide it, she faces challenges like morning sickness during important events.
One thing that could be in the fanfiction is the preparation for the baby. They would need to get a nursery ready. Mal might want to incorporate some Isle - of - the - Lost - style elements into the nursery, while Ben would prefer more traditional Auradon decor. And then there's the matter of their relationship. They would need to grow even closer and support each other more as they anticipate the arrival of their child.
Here's another plot. A strange magic starts affecting the Isle of the Lost, and it seems to be centered around a particular area that Mal and Harry both have a connection to. They are the only ones who can sense it at first. They have to combine their knowledge of the Isle and their magical abilities (Mal's fairy magic and Harry's pirate skills) to figure out what's going on and stop the magic from causing chaos. As they work together, they start to respect each other more and a relationship forms between them.
In this fanfiction concept, Ben and Mal having a baby could bring a whole new dynamic to the Descendants universe. It might show their growth as characters as they prepare to become parents. They would have to deal with the challenges of ruling Auradon while also raising a child. Their friends, like Evie and Jay, could also play important roles in the story, perhaps helping with babysitting or giving parenting advice.
I'm not really into that specific type of fanfiction, but you can try searching on popular fanfiction websites like Archive of Our Own. They usually have a wide variety of stories, and you can filter by the 'Descendants' fandom to find ones related to Mal and pregnancy.
The plot might involve Ben and Mal teasing a new student from the Isle of the Lost. They pretend to be very strict Auradonians and give the new student all these 'rules' that are really just made - up. The new student gets really confused at first. But as the story progresses, Ben and Mal reveal it was all a joke to make the new student feel welcome. They then become good friends and the new student joins in on their teasing games with the other students in Auradon.
FanFiction.net also has 'Descendants' fanfiction. You can use the search bar and type in relevant keywords like 'Mal' and 'pregnant' to find the stories you're interested in. But remember to be cautious as not all stories might be of high quality.
In this fanfiction, Mal and Ben's pregnancy could be a catalyst for character growth. Mal might become more empathetic as she prepares to be a mother. Ben could learn to balance his duties as king and his role as a father - to - be. There could also be external threats. Maybe villains from the Isle of the Lost see this as an opportunity to strike at Auradon while its leaders are distracted.
In some fanfictions, Mal and Ben could start a family. They would be great parents, teaching their children about the importance of unity between the villain and hero kids. They might also take on projects to improve the lives of the less - privileged in Auradon. For example, building more schools in the poorer areas. Their love would be an example for all the young people in Auradon.
One possible plot could be that Audrey has a long - standing rivalry with Mal. Mal's pregnancy is unexpected and Audrey sees it as Mal getting ahead in life. Maybe Audrey has her own insecurities and dreams that she feels are being overshadowed by Mal's pregnancy. This jealousy could lead to Audrey trying to undermine Mal during her pregnancy, or she might try to win over the affection of the people around Mal out of spite and envy.
Another idea is that they both get lost in a mysterious part of Auradon that has been long forgotten. They have to work together to find their way back. Along the way, they discover secrets about Auradon's past that could change the way they view the place and their place in it. This journey would also strengthen their bond as they depend on each other for survival.