One plot idea could be that they initially struggle with the news. Zuko might be worried about how his role as a leader would be affected while Mai is dealing with the physical and emotional changes. They could face challenges from the Fire Nation's traditional views on pregnancy and family. Another idea is that they go on a journey to find a safe place for their child to be born, away from the political unrest in the Fire Nation.
Well, perhaps in the fanfiction, Zuko and Mai's pregnancy could be a catalyst for change in the Fire Nation. Their unborn child represents hope for a new future. They might start initiatives to improve the lives of expecting mothers in the Fire Nation. And also, there could be a sub - plot where they have to protect Mai from those who might see the unborn heir as a threat.
A possible plot could involve Zuko and Mai preparing for the baby's arrival. Zuko could be shown learning about parenting from his own experiences or from others. Mai, on the other hand, might be exploring her new role as a mother - to - be. There could be cute moments like Zuko trying to build a nursery or Mai shopping for baby clothes, all while dealing with the expectations of the Fire Nation court.
One possible plot could be that Zuko and Mai are initially shocked by the pregnancy. They then start to prepare for the baby's arrival. Zuko might be a bit overprotective, while Mai tries to keep her cool. Their friends could be excited or worried, and there could be challenges like dealing with the public's reaction as they are important figures. Maybe they face some threats to the unborn child which they have to overcome together.
A possible plot is that they discover some unique power or ability in their unborn child. This leads to various groups either trying to protect or capture them. They have to go on a journey to keep their baby safe. Also, they could struggle with how to raise a child with such a special gift in a world that is still recovering from war.
You can try looking on fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of fanfictions on various topics, including those related to Mai and Zuko. Just use the search function and type in relevant keywords like 'Mai Zuko pregnant' to find the stories you're interested in.
One idea could be them dealing with the challenges of ruling a kingdom together. Since Zuko is Fire Lord, Mai would have to support him in diplomatic matters, and they might face opposition from some traditionalists. Another plot could be about their family life, like how they raise their children to understand the importance of both power and compassion. Also, a plot where they have to defend their relationship against external threats, such as an old enemy trying to drive a wedge between them.
Maybe a plot where Mai is kidnapped by enemies of the Fire Nation who want to use her to get to Zuko. Zuko then embarks on a dangerous rescue mission. Along the way, he realizes just how much Mai means to him. Or a story where Zuko and Mai are forced into an arranged marriage by Fire Nation politics. At first, they resist, but as they spend more time together, they start to develop real feelings for each other that go beyond the political arrangement.
One plot idea could be Nejire's journey through pregnancy while still trying to be a hero. She might face challenges like hiding her condition from villains who could target her. Another could be the reactions of her friends and loved ones, like how they support her and deal with the changes in their relationships.
A plot twist could be that an enemy from their past resurfaces because they hear about the pregnancy. This enemy wants to use the unborn baby for some malicious purpose, perhaps as a bargaining chip or to gain some sort of power. Naru and Mai then have to go into hiding and protect themselves and the unborn child while also trying to figure out the enemy's motives and how to stop them.
In the fanfiction, it could be that Jin discovers she's pregnant during a time of unrest in their land. Zuko and Jin then have to find a way to keep the pregnancy a secret from their enemies. As the story progresses, they might find unexpected allies who help them. Zuko could also be training to become a better fighter to protect his family, while Jin focuses on taking care of herself during the pregnancy. This could lead to a lot of character development for both of them.
Well, perhaps the plot could start with an unexpected encounter between Zuko and Toph that leads to a deepening of their relationship. Then, when they find out about the pregnancy, they struggle with their own insecurities. Zuko might be worried about being a good father like his own father was a terrible example. Toph, on the other hand, might be concerned about how her blindness will affect her ability to care for the baby. But together, they start to prepare for the new life, learning about parenting and also facing any threats or opposition from those who don't approve of their relationship.
One plotline could be the challenges they face in the Fire Nation. Since Zuko is the Fire Lord, there might be political implications of his partner being pregnant. People might try to use the situation to their advantage or there could be concerns about the safety of the unborn child.