The plot could revolve around the children of Arya Stark. They inherit her skills and sense of adventure. They embark on a journey to discover a long - lost secret of the First Men that could change the balance of power in Westeros. However, they are not alone in this quest. There are other families' next generations also after this secret, leading to a race full of intrigue, battles, and unexpected alliances.
The children of Sansa Stark and Tyrion Lannister would be interesting main characters. They would have a unique heritage, being part Stark and part Lannister. Their story could be about bridging the gap between the North and the South, facing the challenges of being accepted in both regions. They might have to deal with the political unrest that still lingers after the events of the original series, while also trying to create a better future for themselves and Westeros.
The fanfiction might explore Atreus' journey on his own. He could travel to different realms in search of a way to bring back his mother. Along the way, he meets new characters, perhaps a powerful sorceress who tries to use him for her own gain, but he outsmarts her and continues his quest.
The plot could involve a time - travel aspect. The new Avengers accidentally get sent back in time and interact with the original Avengers. This would create some interesting scenarios where they learn from each other. They could also bring back some knowledge or technology from the past to help them in their fight against a future threat that has been plaguing their time.
Well, it might focus on the family dynamics. For example, how Naruto and Hinata raise their kids in a post - war Konoha. There could be a story where their child is bullied because of their famous parents and has to find their own strength. Also, it could involve the new generation of ninjas working together on a special mission that has to do with protecting a long - lost ninja art that Naruto and Hinata's family has some connection to.
Perhaps Bella could be a key figure in a crossover. She could be a 'dragon rider' in a sense, using her connection with Edward (similar to the bond between a dragon and its rider in Game of Thrones). Her immunity to vampire powers could translate to some sort of immunity to the dark magic in Westeros. The werewolves from Twilight could be allies with the Stark direwolves, and together they fight against common enemies, like an army of the dead led by a Volturi - like figure.
One idea could be an OC who is a healer in King's Landing during Joffrey's reign. The OC secretly tries to undermine Joffrey's cruel rule by using their medical knowledge to help those he persecutes. They might start by treating the families of those unjustly imprisoned. This could lead to a dangerous game of cat and mouse with Joffrey and his cronies as they suspect someone is working against them.
One possible plot could be that the Winchesters from Supernatural end up in the world of Game of Thrones. They could be on a hunt for a demon that has somehow found its way into Westeros. Maybe this demon is influencing the actions of some of the power - hungry lords, like Littlefinger. The Winchesters would have to navigate the complex politics of the Seven Kingdoms while also trying to figure out how to exorcise the demon without getting caught up in the wars for the Iron Throne.
One idea could be a new lord who is a long - lost heir to a powerful but fallen house. He starts from nothing, gathering a small group of loyal followers, some outcasts and misfits. He uses his wits and new - found knowledge of forgotten battle tactics to slowly rise in power. He might form an alliance with a group of local peasants who are tired of being oppressed by the existing lords. Through their combined efforts, they start to build a new, more just community which catches the attention of the greater powers in Westeros.
Imagine that the Tesseract accidentally opens a portal between the Marvel universe and Westeros. The Avengers come through and are immediately caught in the middle of the War of the Five Kings. Tony Stark might befriend Tyrion Lannister, both being intelligent and a bit of an outcast in their own worlds. Thor could find common ground with the Red Priests who worship the Lord of Light, as it has some similarities to his own beliefs. The Avengers would then have to choose sides in the war while also preparing for the greater threat of the Others, which they learn about from the Night's Watch.
One interesting plot could be that AOC (assuming it's a character from another source) somehow gets transported to the world of Game of Thrones. She could use her modern - day knowledge and ideals to try and change the political landscape. For example, she might introduce concepts of equality and democracy to the feudal system of Westeros, which would surely stir up a lot of conflict among the different houses and power - hungry individuals.