Perhaps Percy discovers a long - forgotten goddess who was banished ages ago. He decides to help her regain her place in Olympus. Along the way, he has to deal with the other gods and goddesses who are not so keen on this new addition. This would involve a lot of political intrigue and Percy using his wits and powers to navigate the complex world of the gods.
One idea could be Percy having to go on a quest specifically for a goddess who has lost her powers. He has to travel to different realms and face new monsters to retrieve a magical item that can restore her. Another could be Percy getting caught in a love triangle between two goddesses, which causes chaos among the gods as they take sides.
A plot could involve Percy being chosen by all the goddesses to be their champion in a tournament against the forces of chaos. He has to train with each goddess, learning different skills from them, like Athena's wisdom in battle strategy and Aphrodite's charm to manipulate enemies. This would put him in a unique position and create a lot of interesting interactions.
One idea could be Percy having to go on a special quest for a particular goddess that involves retrieving a lost artifact. Maybe it's an ancient weapon that was stolen by a powerful monster. Another could be Percy getting caught in the middle of a feud between two goddesses and having to find a way to make peace. He could use his unique skills and the loyalty of his friends to negotiate a truce.
One idea could be a story where a new demigod discovers they have the power to communicate with the long - forgotten minor gods and goddesses. This new ability throws the established order at Camp Half - Blood into chaos as they try to figure out if this is a good or bad thing.
Perhaps they go on a quest to find a lost artifact that has the power to save their mother from a mysterious illness. Along the way, they face various challenges and learn more about their family's past. They might also encounter other demigods who either help or hinder them in their search.
Perhaps Sally starts a support group for the parents of demigods. This could lead to some interesting interactions and new friendships. Percy could be involved in helping her set it up and deal with the various challenges that come with it, like keeping it a secret from the mortal world and protecting it from monsters.
Here's a plot. Percy and his cousins are invited to a special tournament among demigods from all over the world. But it turns out to be a trap set by an evil force that wants to use their combined powers for its own dark purposes. As they fight to escape, they learn more about their individual strengths and how to work together as a family. They also meet some interesting new characters from different mythologies during their struggle, and these new allies help them in unexpected ways to defeat the evil force and save the day.
Athena is quite popular. She represents wisdom and strategy, so she can add a lot of depth to the story. Percy could learn from her or be in conflict with her plans. Aphrodite is also a favorite. Her domain of love and beauty can create interesting love - related subplots, like making Percy fall for someone against his will or causing jealousy among characters.
One plot idea could be that Lemon has a special power that no one else in the demigod world has, and Percy has to protect her from the gods who want to use or destroy her because of it.
Well, a great plot could involve Percy and his father having to face a new and powerful enemy that is specifically targeting them because of their relationship. This could lead to them having to rely on each other's strengths. For example, Percy's father could use his powers over the sea to help Percy in a fight in a way that Percy has never experienced before. And as they go through this adventure, they could also have heart - to - heart conversations about family, duty, and what it means to be a hero.
One idea could be that his little sister discovers a new, hidden power within herself while on a quest with Percy. Maybe she can communicate with mythical creatures in a unique way that helps them solve a mystery.
Athena is definitely important. She's the goddess of wisdom, so she could be a key figure in guiding Percy or giving him cryptic advice. Another is Aphrodite, as she represents love and beauty, and her influence could play a role in any relationship - related subplots. And of course, Poseidon's sister Demeter might be important too, especially if there are any storylines involving nature or the harvest.