In a 'Jon Snow is a Vampire' fanfiction, the plot could start with his death and subsequent resurrection as a vampire. This new form could make him an outcast, even more so than he was before. He might have to journey to find a way to reverse his condition. Along the way, he meets old friends and enemies who react differently to his vampiric state. Some might fear him, while others might see him as a powerful ally. His relationships with his Stark siblings could be severely tested as they grapple with the fact that he's no longer fully human.
One possible plotline could be a political alliance. The female Jon Snow, with her claim to the North, and Willas Tyrell, from a powerful southern house, could form an alliance to strengthen their positions in the game of thrones. They might face opposition from other houses who fear their combined power.
One possible plotline could be that they are forced to pretend to be in a relationship for political reasons. As they act the part, they start to develop real feelings for each other and eventually share a kiss. Another could be in a post - war scenario where they find comfort in each other's arms and the kiss is a symbol of their new - found connection.
A possible plotline could be Jon Snow getting lost in the Pokemon world and having to find his way back to Westeros. Along the way, he befriends various Pokemon and uses their skills to survive.
One possible plotline could be them uniting against a common enemy. Maybe they join forces to fight the White Walkers. Another could be a political alliance where they use their combined influence to take the Iron Throne.
Perhaps the dragon in Jon's fanfiction is the last of its kind, and Jon has to protect it from those who want to harm it. There could be a whole story of them hiding, fighting off hunters, and trying to find a new place for the dragon to live safely.
He could meet ancient Valyrian dragonlords. These dragonlords might still have some connection to their dragons, even if the dragons are long gone or in hiding. Another possibility is meeting the descendants of the original Valyrian slaves who have their own unique stories and skills.
A plot could revolve around Arianne Martell traveling to the North. She meets Jon Snow, and at first, they are suspicious of each other. But as they get to know one another, they realize that they both have a strong sense of justice. They start to work together to improve the lives of the people in the North, and love blossoms between them as they face various challenges together, such as dealing with famine or bandit raids.
One possible plot could be that female Jon Snow, who has the same noble and somewhat conflicted nature as her male counterpart, meets Aegon. They initially clash due to their different upbringings and loyalties. For example, if Aegon has a claim to the throne and Jon Snow is still tied to the North, their paths cross in a political struggle. But as they get to know each other better, they start to understand and respect each other's viewpoints and might even fall in love, changing the political and personal dynamics of the story.
A possible plot could involve Jon Snow's loyalty to different groups being tested because of the baby. Ygritte, on the other hand, is determined to raise the baby among her own people. This creates a conflict between them as they both love their child but have different ideas about its future. Also, the baby could be a bridge between the wildlings and the people of the Seven Kingdoms, leading to a story of unity and acceptance in a world full of division.
The uniqueness lies in the contrast it creates. Jon Snow was known for his honor and loyalty in the original story. As a vampire, these traits might be put to the test. He could be in a situation where his vampiric instincts conflict with his moral code. Also, the settings in these fanfictions can be really different. Instead of just the cold North or the political intrigues of Westeros, there could be dark vampire lairs and new, supernatural elements added to the familiar 'Game of Thrones' world.