One idea could be that the daughter of Hades has the power to communicate with the dead in a unique way, like seeing their memories. She could use this to help Percy solve a mystery that involves an ancient curse. Another plot could be her struggle to fit in among the other demigods because of her dark powers and the stigma associated with Hades. Maybe she discovers a hidden power within herself that is related to her father's realm and has to learn to control it while also dealing with the outside world's view of her.
A possible plot could involve her being framed for a crime she didn't commit within the demigod community. Because of her connection to Hades, many are quick to believe she's guilty. Percy believes in her innocence and together they set out to find the real culprit. During their investigation, they uncover a conspiracy that goes deeper than they thought, involving some of the most powerful figures in the demigod world. Her powers as the daughter of Hades, such as the power to sense death nearby, could be crucial in their search for the truth.
One interesting plot idea could be her struggling with the stigma associated with being Hades' daughter. For example, other demigods might be scared or distrustful of her at first. Another could be her going on a quest related to the Underworld, like trying to stop some escaped souls from causing chaos on Earth. She could also have a special power related to the dead that she has to learn to control, such as being able to see the last moments of a dead person's life, which could be both a gift and a curse as she might see some really traumatic things.
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.
Another plot could be Percy discovering a long - lost relative among the children of Hades. This relative has some sort of power or knowledge that could change Percy's understanding of his own identity and his place in the demigod world. It could lead to a journey of self - discovery for Percy as he navigates this new family connection within the dark and often misunderstood realm of Hades.
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.
Some interesting plot ideas for Percy Jackson and Daddy Hades fanfiction could start with Percy accidentally ending up in a part of the Underworld that only Hades can access. Hades then has to guide him out, and during this journey, they start to understand each other better. Another idea is that there's a power struggle in the Underworld and Percy gets caught in the middle. Hades has to decide whether to protect Percy or use him for his own gain. Also, what if Percy discovers that Hades has a soft spot for him because he reminds him of someone from his past?
A plot could revolve around the son of Hades having to face a new and powerful monster that is specifically targeting him because of his heritage. This would lead to a series of adventures where he has to use his unique powers from Hades to survive and protect his friends. For example, he might be able to control the undead in new and unexpected ways to fight this monster.
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?
One idea could be Percy having to deal with the stigma of being associated with Hades in the demigod world. He might face distrust from other demigods who are scared of Hades' reputation.
One plot idea could be Percy having to mediate a dispute between Hades and Persephone. Maybe something has gone wrong in the Underworld and their relationship is on the rocks because of it. Percy, being the hero he is, tries to find a solution that satisfies both of them.
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.