Another plot idea is that there's a rift in the House of Hades that is slowly corrupting the place and they have to find the source of it. Along the way, they face their own inner demons. Annabeth might struggle with her insecurities about being smart enough to solve the mystery, while Percy battles with his fear of not being strong enough to protect Annabeth. As they overcome these personal struggles, they also get closer to solving the problem of the rift.
One plot idea could be Percy and Annabeth getting separated in the House of Hades and having to find their way back to each other while facing different challenges unique to that realm. For example, Percy might encounter a group of lost souls who try to mislead him, while Annabeth has to solve a series of ancient puzzles to progress. Another idea could be that they discover a hidden power within the House of Hades that could potentially be used to defeat the ultimate enemy, but they have to first understand and control it. A third idea is that they meet a mysterious figure who claims to be able to help them escape, but has their own ulterior motives that Percy and Annabeth have to figure out.
You could write a fanfiction where the House of Hades has a sort of time - warp effect. The demigods find themselves reliving parts of their past traumas while in there. This would not only be a great way to explore their backstories more but also add an element of psychological horror. Also, what if there was a character from Greek mythology that they thought was long dead but is actually alive and trapped in the House of Hades? They could then try to rescue this character while also fulfilling their main mission.
One idea could be exploring the backstories of the minor characters in the House of Hades more deeply. For example, the story could focus on how a particular spirit in the House got there and what their life was like before. Another plot idea could be a time - travel twist where Percy and his friends are sent back to an important moment in the history of the House of Hades to change something that has a big impact on their present situation. A third idea might be a 'what - if' scenario, like what if Percy had to face a challenge alone in the House of Hades without his friends and how he would overcome it.
Well, a cool plot for 'Percy Jackson The House of Hades' fanfiction could be a time - travel twist. Imagine if Percy and his friends got sent back in time to a crucial moment in the history of the House of Hades. They could then change something that has a huge impact on their present situation. Also, you could focus on a new character being introduced. This character could be a half - blood who has been trapped in the House of Hades for ages and has unique powers or knowledge that helps Percy and the gang. Or, how about a story where the House of Hades itself starts to change and become more like a living, breathing entity that's either trying to help or hinder our heroes?
The fanfic could be about Percy and Annabeth's kids participating in a friendly competition within the camp. It's a series of challenges that test their physical strength, strategic thinking, and teamwork. Through this competition, they learn more about their own abilities and the importance of working together, while also having some fun rivalries with other demigod kids.
A great plot idea is that the child has a special connection to the sea, like Percy, but also has Annabeth's wisdom. So they use this combination to solve a mystery that has been plaguing Camp Half - Blood for years. For example, the mystery of why some demigods' powers are fading. Another could be that the child gets sent back in time and has to interact with their parents when they were younger. This could create some really interesting situations and challenges for the child.
A possible plot could involve a magical tournament where Percy and Annabeth are on opposing teams. Their rivalry gets in the way at first, but as the tournament progresses and they see the real threats emerging, they start to cooperate in a more covert way to ensure the safety of everyone involved.
One idea could be exploring the backstories of the minor characters in the House of Hades more deeply. For example, delving into the history of some of the shades that are often just in the background.
One idea could be Percy discovering new powers related to being the son of Hades. For example, he might be able to control the shadows in a unique way that no other demigod can. He could use this power to spy on enemies or to travel quickly through the underworld.
Maybe the son of Hades in the fanfic has a special bond with a particular type of monster that is usually associated with death, like a Cerberus - like creature. Percy Jackson and his friends are initially scared of this bond but then realize it could be used to their advantage. For example, the son of Hades could use this bond to control the monster and have it help them in a battle against a common enemy. The fanfic could also explore how the son of Hades tries to fit into the world of Camp Half - Blood while being different from the other demigods.