Well, a cool plot could be that Percy discovers a hidden prophecy related to his birth. This prophecy might involve saving the world in a different way than other demigods. He could be caught in a power struggle between the followers of Artemis and those who oppose the idea of her having a son. Also, his relationship with other characters like Annabeth would be really interesting to explore. Annabeth might be confused or even jealous at first, but then they could form a new kind of alliance.
One plot idea could be Percy's struggle to fit in among the demigods when his parentage is revealed. Since Artemis is a virgin goddess, his very existence would be a huge shock. Another could be Percy having unique powers inherited from both Artemis and Orion. For example, he might have enhanced archery skills from Artemis and great hunting or combat skills from Orion. Maybe he has to prove himself worthy to both his parents' legacies in a series of trials set by the gods.
Well, it could be about Percy having to deal with the conflict of being the son of two such different deities. Maybe he has powers from both Orion and Artemis. For example, he could have Orion's hunting skills combined with Artemis's connection to the moon. He might struggle to fit in with the normal demigods as his origin is so unique.
One interesting storyline could be the struggle of a Son of Artemis in a world dominated by male demigods. He might face discrimination or be underestimated at first. For example, in a quest, others might doubt his abilities because he's associated with Artemis, a goddess who has a mainly female following. Another could be his relationship with the wild animals that Artemis is associated with. He might have an extraordinary bond with them, which helps him in various challenges, like using a pack of wolves to track down a powerful enemy.
First, focus on the unique relationship. Since Percy is the son of Artemis (a virgin goddess in the original mythology) and Orion, it's a very unconventional pairing. You could start with Percy's discovery of his strange parentage. Maybe he's shunned by some in the demigod community for this. Then, create a conflict like an ancient prophecy that predicts either great good or great evil from him. This would drive the plot forward as he tries to figure out his destiny.
One idea could be Percy having to learn the ways of Artemis's hunters. He might struggle with the no - male - contact rule at first but then find unique ways to bond with his new sisters. Another could be Percy going on a quest specifically related to Artemis's domain, like protecting a sacred forest. And he could use his water powers in new and unexpected ways in the context of Artemis - related tasks.
One idea could be that the blind son of Artemis is a seer in a different sense. Instead of seeing the future with his eyes, he has prophetic dreams. These dreams could be very vivid and detailed, but also confusing at times. He has to learn how to interpret them and use this gift to help his fellow demigods. Percy could be skeptical at first but then come to rely on his insights.
One interesting plotline could be Orion teaming up with Percy to face a common enemy that threatens both the mortal and the demigod world, while Artemis has to decide whether to trust Orion again. Another could be Percy getting caught in the middle of an old feud between Orion and Artemis, and having to use his wits to keep the peace. Maybe a plot where Orion is redeemed through his interactions with Percy and gains Artemis's forgiveness in the end.
His character development could be centered around his identity crisis. He was used to being a son of Poseidon, and now with this new revelation, he has to re - evaluate who he is. He might struggle with feelings of not belonging anywhere. But as he meets others who accept him for who he is, he starts to embrace his new identity as the son of Orion and Artemis and becomes a stronger and more confident character.
A time - travel plot could be interesting. Percy Jackson accidentally travels back in time and meets Theseus and Orion. They could be on a joint mission to retrieve a powerful artifact that was lost in time. Percy has to adapt to the different time period and learn from Theseus and Orion how to survive in that era while also using his modern - day knowledge to help them achieve their goal.
He would likely have enhanced hunting skills, similar to those of Artemis. This could include super - sharp senses, like being able to see in the dark really well or track any creature easily. And from Orion, he might inherit great physical strength. He could be able to lift heavy objects or fight with more power than an ordinary demigod.
A great plot twist could be that Percy, as the champion of Artemis, has to deal with the jealousy of other gods. Since Artemis is a powerful and respected goddess, some other gods might not be happy about Percy being her champion. This could lead to various challenges for Percy, such as being framed for a crime he didn't commit by a jealous god. Or perhaps, there could be a twist where the hunters of Artemis have mixed feelings about Percy. Some might see him as an intruder, while others start to develop a different kind of respect for him, which creates internal conflicts within the group of hunters.