A possible plot could be that both Daenerys and Arya are captured by a powerful and evil warlord. They are locked in a dungeon together. At first, they bicker as they have different personalities and methods. But soon, they realize that their only way out is to work together. They use Arya's ability to change faces and Daenerys' connection to her dragons to escape and then seek revenge on the warlord, becoming a formidable duo in the process.
Perhaps in the fanfiction, Arya discovers that Daenerys has a secret enemy within her own camp. Arya uses her skills to uncover the traitor. Daenerys, in turn, helps Arya with her vengeance list. They form a bond based on mutual respect and admiration. They also learn from each other's different ways of fighting for what they believe in. Daenerys with her dragons and political power, and Arya with her stealth and assassination skills.
One plot idea could be that Daenerys and Arya meet on the road. Arya, being the assassin she is, is initially suspicious of Daenerys. But as they start talking, they realize they both have a common goal of bringing justice to Westeros. Daenerys offers Arya a position in her court, which Arya hesitantly accepts. Together, they plan to take down the corrupt lords and make Westeros a better place.
One plot idea could be that Arya, in her guise as a servant in King's Landing, catches Tywin's attention not for her identity but for her sharp intellect. Tywin, always on the lookout for useful tools, begins to test Arya in subtle ways. For example, he might ask her opinion on various political matters in a veiled attempt to see if she has any insights that could be of use to him. Another idea is that Arya, while still hating the Lannisters, realizes she can use Tywin to gain access to information that could help her in her long - term revenge plans. She has to balance her hatred and her need for secrecy while Tywin remains oblivious to her true nature.
A plot could involve Arya getting injured on one of her adventures. Gendry, who has a soft spot for her, takes it upon himself to nurse her back to health. During this time, they share stories of their past experiences. Arya tells Gendry about the strange and dangerous things she saw while being a Faceless Man. This closeness could lead to a romantic relationship as they both realize how much they mean to each other.
A plot idea could involve Jon and Daenerys having to face a common enemy that is not the Night King. Suppose a new and powerful warlord rises in Essos and decides to invade Westeros. Jon and Daenerys would have to combine their forces, not just their military but also their diplomatic skills. Daenerys' experience with different cultures in Essos and Jon's knowledge of the North and the Seven Kingdoms would be put to the test as they try to form alliances against this new threat.
One idea could be an OC who is a healer from a far - off land that Daenerys meets during her travels. This healer has unique knowledge of magic that could help Daenerys in her quest for the Iron Throne.
Another fanfiction concept could be a 'what if' scenario. What if Jon was the one who found Daenerys when she first landed in Westeros? This would put Jon in a position of power and knowledge about this new queen. He could act as her guide through the complex web of Westerosi politics. Their relationship might develop more organically as he helps her navigate the land he knows so well, and perhaps they would fall in love more gradually, away from the prying eyes of the other lords and ladies.
One idea could be to explore his upbringing in a world where his mother has conquered Westeros. He could grow up with a strong sense of justice, influenced by Daenerys' ideals. Another could be his relationship with the dragons. Maybe he has a special bond with one of them that is different from his mother's.
In some fanfictions, there might be a plot where Jaqen actually has a deeper connection to Arya's family than she initially realizes. Maybe he was secretly tasked with protecting her all along. This could lead to a series of revelations and a change in their relationship dynamics, from mentor - student to something more like comrades in a grander scheme.
A really interesting plot twist might be if Arya discovers that her pregnancy is part of a political plot against her or her family. This would force her to use her skills and wits to protect herself and her unborn child, similar to how she had to survive in the original series. It could also lead to her reuniting with long - lost family members or making new alliances. Well, in this fanfiction, she would have to navigate through a whole new set of challenges with the added responsibility of a pregnancy. She might even have to pretend to be someone else to keep her pregnancy a secret from her enemies. This would be a great way to see her character develop further in a different context.
One idea could be exploring what would happen if a minor character like Gendry had been secretly trained in magic. He could use his newfound powers to unite the smallfolk against the warring nobles. Another plot could revolve around a female knight from the North who disguises herself as a man to fight in the wars, and along the way, she discovers secrets about the White Walkers that no one else knows. Or perhaps a fanfiction where Daenerys and Sansa form an alliance much earlier and together they reshape the power dynamics of Westeros.
A really cool 'Game of Thrones fanfiction' plot could involve the resurrection of some of the dead characters in a different way. For example, what if Ned Stark was brought back not as a vengeful wraith but as a wise advisor to a new king or queen? His honor and wisdom could shape the future of Westeros in a completely new direction. And it would be interesting to see how the other characters react to his return.