One idea could be that a new demigod arrives at Camp Half - Blood. This new demigod is really good - looking and shows a lot of interest in Percy. Annabeth gets jealous seeing them together all the time, like during training sessions or at the campfire. Another plot could be that Annabeth has to work closely with an old acquaintance on a quest, and Percy gets jealous because he feels left out and he's not sure about this acquaintance's intentions towards Annabeth. A third plot could be that in a school setting outside the camp, Percy is getting a lot of attention from mortal girls because of his heroic looks, and Annabeth has to deal with her jealousy while also trying to keep their demigod world a secret.
For a Percy and Annabeth jealous fanfiction, here's a plot. There's a new instructor at Camp Half - Blood who takes a particular liking to Percy. The instructor is always complimenting Percy's skills and giving him extra attention. Annabeth becomes jealous as she notices this. She starts to feel like she's not as important to Percy as she thought. Another idea is that Annabeth gets a letter from an old friend (a male) who wants to visit her at the camp. Percy gets jealous when he sees how excited Annabeth is about the visit. He starts to wonder if there are feelings between Annabeth and her old friend. And one more plot could be that Percy and Annabeth are at a demigod competition. Percy has a female partner for one of the events, and Annabeth can't help but feel jealous as she watches them practice and compete together.
Well, a possible plot for a Percy and Annabeth jealous fanfiction is when Percy is chosen for a special honor in the camp that involves spending a lot of time with a group of important campers, including some girls who seem to idolize him. Annabeth starts to feel jealous as she sees Percy being in the spotlight and being around these other girls so much. Or perhaps there's a prophecy that involves Annabeth and another male demigod having to go on a secret mission together. Percy is jealous because he can't go with her and he's worried about what might happen between them during the mission. Also, a plot could be that at a demigod gathering, a foreign demigod flirts with Annabeth in front of Percy, and Percy's jealousy leads to some interesting confrontations and misunderstandings between him and Annabeth.
One plot idea could be that Percy and Annabeth face a new and powerful enemy that forces them to rely on each other more than ever. As they battle this foe, their feelings for each other deepen. Another idea is that they get sent on a quest together to a mysterious place. During this quest, they discover secrets about each other and fall in love in the process. A third plot could involve Percy getting amnesia and Annabeth having to make him fall in love with her all over again.
One idea could be that Jason is jealous of Percy's popularity among the demigods. So, he tries to outdo Percy in various quests, leading to some friendly competition that eventually turns into a real understanding between them. For example, there could be a big quest to retrieve a powerful artifact, and both Jason and Percy are chosen. Jason, being jealous, initially tries to take the lead all the time but realizes that Percy's skills are also valuable and they end up working together successfully.
One plot could be Percy seeing Annabeth spending a lot of time with another demigod on a quest. He gets jealous and starts acting strange around her. This could lead to some misunderstandings between them until they finally talk it out.
One common plot point is the friend trying to undermine Percy. For example, the friend might spread rumors about Percy in the camp or during a quest to make others question his abilities or intentions.
One idea could be that they meet during a quest. Percy and Annabeth are on a mission to retrieve a powerful artifact. They cross paths in a dark forest, and in the dim light, their eyes meet. There's an immediate connection. They then have to work together to fight off some mythical creatures. During this time, they learn about each other's strengths and weaknesses, all while being smitten with each other from the start. Another plot could be at a demigod gathering. Percy is lost and looking for someone to show him around, and Annabeth offers. Their hands brush as she hands him a map, and that's when the love at first sight moment occurs. Then they could explore the gathering together, getting to know each other better.
One idea could be a story where Percy and Annabeth have to mentor a new group of demigods. They teach the newbies about their powers, the history of the demigod world, and how to survive in the dangerous situations they'll face. It would focus on their leadership skills and the growth of the new characters under their guidance.
A plot could be set in a post - apocalyptic world where Percy and Annabeth are on opposite sides at first due to some misunderstanding. As the story progresses, they realize they need to work together to face the real threats in this dark new world.
One plot idea could be that Percy is so caught up in his own heroic deeds and adventures that he completely misses all of Annabeth's subtle hints of her feelings for him. Meanwhile, Annabeth tries different ways to get his attention, like helping him with his studies in a very flirtatious manner, but Percy just thinks she's being a good friend. Another could be Percy getting into a situation where he has to protect Annabeth without realizing his true feelings for her are deeper than friendship, and throughout the fanfic, his obliviousness slowly starts to fade as he gets closer to her in the face of danger.
In a fanfiction about their bickering, a plot could be centered around a magical item. Let's say they find a new weapon or artifact. Percy wants to use it right away to test its power, but Annabeth is worried about the potential consequences and unknown abilities of the item. This leads to their bickering. Additionally, they could bicker about their relationships with other characters. For instance, Percy is friendly with a new demigod who Annabeth is a bit suspicious of, and this causes tension and arguments between them.
One idea could be that Percy and Annabeth are on a pirate ship, and they discover a hidden treasure map. They have to battle other pirates and sea monsters to reach the treasure. Another could be that they are pirates who are trying to free a group of captured demigods. A third idea is that they are pirates on a quest to find a magical artifact that can control the seas.