One possible plot could be that Jafar hypnotizes Jasmine to make her do his bidding in the palace. For example, he might make her steal the magic lamp for him.
In this fanfiction, it could be that Jafar hypnotizes Jasmine to reveal the secrets of the kingdom. Jasmine, being a princess, has knowledge about the kingdom's defenses, treasures, etc. Jafar, in his quest for power, uses hypnosis to get this information from her. He may plan to use this knowledge to overthrow the Sultan and take over the entire kingdom.
Perhaps in the fanfiction, Jafar hypnotizes Jasmine so that she turns against Aladdin. He could use his hypnotic power to make her believe Aladdin is a traitor and thus drive a wedge between them. This would add a lot of drama and conflict to the story as Aladdin would then have to find a way to break the hypnosis and win Jasmine back.
It could be Aladdin. Since Jasmine is his love interest, he would be motivated to rescue her from Jafar's hypnosis. He has his wits and the help of Genie, so he could find a way to break the spell and save Jasmine.
In a 'Jasmine kisses Jafar fanfiction' plot, it could start with Jafar being exiled instead of killed. He then lives a different life and becomes a changed man. Years later, he returns to Agrabah and meets Jasmine again. Jasmine is intrigued by this new Jafar. They start to interact more, and through shared experiences and conversations, Jasmine finds herself attracted to him and eventually kisses him. However, this new relationship would be met with much opposition from the people of Agrabah who remember Jafar's past misdeeds.
In this fanfiction, it could be that an outside force has forced Jafar and Jasmine to marry. They initially hate each other but as they get to know each other better, they find out that they have more in common than they thought. For example, they both have a deep love for Agrabah, and this shared love becomes the foundation for their relationship to grow.
Well, it could be about Jasmine using her wits against Jafar's evil schemes in a more light - hearted, lemon - flavored story. Maybe Jafar tries to trick her into giving up the kingdom but Jasmine, with the help of some new friends she makes in this fanfic world, outsmarts him at every turn.
In a 'jafar x jasmine fanfic', perhaps it could be a time - travel plot. Jafar is sent back in time to before he became evil, and he meets a young Jasmine. They form an unlikely friendship that gradually turns into a deeper connection as they both work together to prevent some future disasters in the kingdom.
One possible plot could be that Jasmine, in a different take on the story, is initially charmed by Jafar's power and mystery in a way that is not in the original tale. They might start with some sort of power - play relationship where Jafar tries to use Jasmine to further his own goals but then gradually develops unexpected feelings for her. However, this is a very different and often darker take on the characters compared to the original Disney story.
One idea could be that Jasmine manages to outwit Jafar in a different way than in the original story. Instead of relying on Aladdin, she uses her own wits and charm to turn Jafar's schemes against him. Maybe she pretends to be interested in his power - play along with his ideas just enough to get close and then expose his true nature to the whole kingdom.
In a fanfiction where Aladdin, Jafar and Jasmine are married, it could be a very strange and complex situation. Maybe it could start with Jafar having a change of heart after being defeated by Aladdin. He could then start to see the good in Aladdin and Jasmine's relationship and gradually become part of it in a very different way from his original evil self.
There could be a lemon merchant. This character might be a jolly fellow who travels around selling different kinds of lemons. He could get caught in the middle of the conflict between Jasmine and Jafar. Maybe he has some secret knowledge about the lemons that could help Jasmine defeat Jafar's plans.
One common theme is power dynamics. Given Jafar's thirst for power and Jasmine's position as a princess, their relationship in fanfiction often explores how power can both attract and repel them.