A great plot could be that Percy and Grover are sent on a mission to the Underworld to retrieve an important artifact that was stolen from the gods. On their journey, they meet various mythological beings, some of whom try to stop them and others who offer help. Their bond as friends is tested as they face difficult decisions and dangerous situations in the dark and treacherous Underworld.
One idea could be that Percy and Grover discover a hidden part of the Camp Half - Blood forest that has magical creatures not known before. They have to figure out how to protect these creatures from a new threat.
A plot could be centered around Grover getting lost in a magical forest that has some strange and powerful magic. Percy has to go in and find him. Along the way, Percy discovers new aspects of his own powers as he battles the forest's guardians and overcomes various magical obstacles. Grover, on the other hand, has his own adventure within the forest, making new friends among the forest spirits and learning ancient secrets that could help them later.
One idea could be that Grover discovers a new type of magical plant in the forest that has the power to heal any wound. But it's protected by a fierce mythical creature. Percy has to help Grover get past the creature to retrieve the plant. This could lead to an exciting adventure filled with battles and problem - solving.
A young demigod who has the power to manipulate time in small increments. This character could add an interesting dynamic to the story. They might accidentally cause some chaos with their power at first, but then learn to control it and use it to help Percy and Grover in their quests. Their presence could also create some tension as Percy and Grover have to figure out how to deal with someone who has such a powerful and potentially dangerous ability.
One plot idea could be that Grover discovers a new type of magical plant in the forest while with Juniper, and they need Percy's help to protect it from some mythical creatures that want to destroy it for their own gain. Another could be Percy, Grover and Juniper getting lost in an enchanted forest that has been warped by some dark magic, and they have to find their way out together while facing various challenges.
One common theme is the exploration of their friendship in a romantic context. Another could be the challenges they face as a same - sex couple in a world that may not be fully accepting, similar to the real - world struggles of the LGBTQ+ community.
Yes, there are some. You can try searching on fanfiction websites like Archive of Our Own. Just be aware that the quality can vary greatly.
Perhaps the Staff of Fire gets stolen and Percy has to go on a quest to find it. Along the way, he teams up with some new demigods he's never met before. They face various challenges like a maze full of fire - breathing monsters. Percy discovers that the Staff has a hidden power that can only be unlocked by a certain combination of his own powers and those of his new friends.
One idea could be Percy Jackson teaming up with Kratos from God of War. They could face a common enemy that threatens both the Greek and Norse worlds. Maybe a powerful Titan who has found a way to break free from Tartarus and is causing chaos everywhere.
One idea could be Percy having to face a new and powerful sea monster that is immune to his normal powers. He has to rely on his wits and the help of some unexpected allies from the Roman side. Another could be Percy getting lost in an underwater maze that was created by an ancient sea god as a test for him. Maybe he discovers a long - lost relative who is also a demigod and they team up to solve a mystery that threatens both the Greek and Roman camps.
They could go through a really tough trial together. For example, they are trapped in a maze - like place full of dangerous traps and monsters. In this situation, they have to rely on each other completely. Grover uses his knowledge of nature to find hidden paths, and Percy uses his combat skills to protect them. This shared experience would deepen their bond.