Another plot could be that she is sent to a different realm to learn from other great sages. There, she would encounter new cultures, magics, and ways of thinking. She has to adapt quickly and use her wisdom to make friends and foes alike. She could then bring back what she has learned to help her own world which is on the brink of some sort of disaster.
Perhaps Percy, as the God of Wisdom, has to deal with a situation where his wisdom is being questioned by the other gods. They don't believe that a former hero like him can handle the responsibilities of wisdom. So he has to prove himself by solving a complex problem that has been plaguing Olympus for centuries. He uses his unique perspective as a demigod - turned - god to come up with a solution that no one else could think of.
Maybe in the fanfiction, the process of getting his wisdom teeth out reveals some new aspect of his powers. For example, his healing factor works extra fast and the dentists are baffled. Then he has to figure out how to hide this new discovery from those around him while also dealing with the pain and discomfort of having his teeth removed. This could add an element of mystery and intrigue to the story.
Perhaps she embarks on a diplomatic mission to a neighboring kingdom. Along the way, she discovers a plot against her father's empire and has to use her wits and charm to thwart it. She could also form unexpected alliances with people from different social classes during this journey.
One idea could be that the forgotten daughter discovers she has a special power. Maybe she can communicate with animals and this ability helps her find her true place in the world.
One idea could be that their daughter discovers she has a special talent for solving mysteries, just like her parents. She might start by helping solve a small mystery in her school or neighborhood, using the skills she's learned from Tony and Ziva's stories. Another plot could involve her trying to find out more about her parents' past adventures, which leads her on an exciting journey of her own. Maybe she uncovers a long - lost secret related to a case they worked on together.
Another plot could involve the daughter going on a journey to learn more about her parents' past. Along the way, she meets different characters who knew Tails and Cosmo. This journey of self - discovery also helps her to understand her own place in the world and her unique abilities.
A possible plot is that Hermione discovers some long - lost secrets about her father, Sirius. This could lead her on a quest to uncover the truth about his past and his family. Along the way, she might find out about some hidden magical artifacts or spells that were associated with Sirius's family line. It could also involve her interacting with Sirius's old friends and enemies, which would create a lot of interesting dynamics. For instance, she might have to deal with some who are still bitter about Sirius or others who want to protect his legacy through her.
One plot idea could be Hermione discovering her true parentage through a series of magical events. Maybe she stumbles upon an old family heirloom that has a connection to Sirius. Another could be her having to deal with the reactions of her friends, like Harry and Ron, who are shocked by this revelation. She might also face challenges within the wizarding community as Sirius had a somewhat controversial past.
Maybe Salem's daughter has unique powers that are different from her mother's. She might struggle to come to terms with these powers and whether to use them for good or evil. For example, she could have the power to heal, which is the opposite of Salem's destructive nature, and she has to decide if she'll use it to counter her mother's actions.
One plot idea could be Hermione's struggle to fit in among the other demigods. Since she's the daughter of Zeus, she might have immense power that she has to learn to control. Another could be her going on a quest to retrieve a powerful artifact that only she, as a daughter of Zeus, can handle. Maybe she has to face off against an ancient enemy of Zeus that has been awakened.