In a fanfiction plot, Aang and Zuko could start a training academy together. Aang would bring his knowledge of all the bending arts, while Zuko would contribute his experience in combat and leadership. But they face opposition from traditionalists who don't believe in their combined approach. This would force them to fight for their vision of a new kind of bending education.
A possible plot is that Aang discovers he and Zuko are related in a more complex way than they thought. Maybe there was a hidden family connection in their past that gets revealed, causing chaos in their relationships with their friends and families. This could lead to a journey of self - discovery for both of them as they figure out what this new information means for their identities.
One idea could be a time - travel fanfiction. Zuko and Aang could be sent back in time to the era before the war started. They would then have to use their knowledge of the future to prevent the war from ever happening. This would involve them working together to change the minds of key people and stop the events that led to the conflict.
One interesting storyline could be Aang and Zuko teaming up to teach the next generation of benders. They combine their different bending knowledge and ways of life. Zuko could teach firebending discipline while Aang imparts the spiritual side of bending.
Maybe Zuko has his own goals that don't involve chasing Aang. He could be more focused on redeeming himself in other ways, like helping the Fire Nation people or learning about different cultures without the need to pursue Aang.
One interesting plot could be Aang's struggle to rebuild the Air Nomad culture. He might face challenges like finding suitable places for new air temples and recruiting new airbenders. Another plot could involve his relationship with Katara after the war, how they adjust to a more peaceful life together. And perhaps there could be a plot where Aang has to deal with remnants of the Fire Nation who are still bitter about the war's outcome.
One interesting plot could be a time - traveling scenario where Aang and Korra meet in a different era. They might have to team up to face a new threat that combines the challenges of both their times. For example, an ancient spirit that was sealed away during Aang's time is accidentally released in Korra's era, and they need to use their unique bending skills and knowledge to reseal it.
A plot could be that Aang and Zuko discover a new form of bending that combines air and fire. They have to work together to master it and understand its implications for the world. Another idea is that they are sent on a diplomatic mission to a far - off land where they face cultural differences and have to rely on each other to succeed.
One common theme is friendship. Since they start off as enemies, many fanfictions focus on how they build a strong bond of friendship. Another is redemption. Zuko's journey of redemption is often explored further in relation to Aang.
I'm not sure specifically as there could be many different stories within that fanfiction. It might be about Zuko and Aang's relationship, perhaps in an alternate universe or a situation not shown in the original series. It could explore their friendship, their adventures together, or even some creative scenarios that fans have come up with.
A common trope is the 'redemption arc' for Zuko within the context of his relationship with fem Aang. It often involves him trying to make up for his past actions while falling in love with her. Also, the 'cultural exchange' trope is popular, with fem Aang introducing Air Nomad culture to Zuko and the Fire Nation, and Zuko teaching her about Fire Nation traditions. There's also the 'forced proximity' trope, like they have to work together closely on a mission and feelings start to develop.
Well, in a zuko x aang fanfic, the exploration of their powers together can be really interesting. Aang can control air, water, earth and fire, and Zuko is a firebender. Their combined abilities can create unique storylines, like fighting a new enemy that requires both their skills. Also, their friendship has so much potential for development in fanfics. They start from being on opposite sides and then gradually come to understand and care for each other, which can be explored in many different and fascinating ways.