One exciting plot could be Percy using his full power to face an ancient and powerful Titan that was previously thought to be invincible. He could summon massive waves and control sea creatures in ways never seen before to defeat the Titan and save the world of the Gods.
Well, perhaps in some fanfiction, Percy with his full power has to navigate a dangerous maze that's filled with illusions and deadly traps. His power not only helps him physically but also mentally as he uses his connection to the sea to see through the illusions and guide his friends to safety while fighting off monsters that lurk within.
In some Percy Jackson power fanfiction, there are concepts related to character relationships and how powers are affected by them. For instance, if Percy and Annabeth had a falling out, it could lead to a change in his power levels due to emotional distress. Also, there might be ideas about training regimes to enhance powers. Maybe Percy goes through a special training that unlocks a new aspect of his water - controlling abilities, such as being able to turn water into ice sculptures.
One interesting plot could be Percy having to deal with new mythological threats while trying to balance his college studies. For example, a group of rogue satyrs causing chaos on campus. Another plot might involve Percy and his friends forming a secret society in college to protect the mortal world from hidden magical dangers. And sometimes, there are plots where Percy has a love interest who is also involved in the world of Greek mythology and they face challenges together in the college setting.
One interesting plot could be Percy and his friends going on a quest in a new, unknown realm. Maybe a place that's not part of the regular Greek mythology but still related in some way.
A great plot might involve Percy and Calypso going on a quest to save a group of demigods. Along the way, they face various monsters and challenges, and their relationship deepens as they rely on each other. They could also discover some hidden secrets about the gods during this quest.
One interesting plot could be Phoebe joining Percy on a quest. Maybe she has some unique powers that help them overcome the challenges they face, like being able to communicate with certain mythical creatures that Percy can't. This could add a new dynamic to the typical Percy Jackson quest.
Another plot could involve the Earthshaker being awakened accidentally. This causes chaos not only on Earth but also in the Underworld. Percy and his companions need to travel to different realms, including the Underworld, to figure out how to put the Earthshaker back to sleep. They encounter different gods and goddesses during their quest, and some might help while others might try to hinder them.
A cool plot could be a time - travel fanfiction. The Minotaur travels back in time to the era when the gods were more actively involved in the mortal world. He could interact with the gods, and Percy has to follow him through time to stop him from causing chaos. This would involve Percy having to deal with different rules and powers in the past, and also understanding the Minotaur's motives for going back in time.
One interesting plot could be where the NPU (assuming it's some new power or entity in the Percy Jackson universe) is a key to unlocking an ancient prophecy that no one knew existed. Percy and his friends have to figure out how to use the NPU to their advantage while also dealing with the usual monsters and gods trying to stop them.
One interesting plot could be the crossover of characters from 'Percy Jackson' and 'The Selection' universes. Maybe Percy finds himself in the world of 'The Selection' and has to deal with the different social and political structures there while still having his demigod powers.
One interesting plot could be Percy having to face an ancient, long - forgotten monster that wasn't in the original series. It adds a new level of danger and adventure.