A plot could involve a prophecy that only Percy and Triton together can fulfill. They are initially reluctant partners, but as they journey to complete the prophecy's tasks, they encounter various mythical creatures and have to use their combined powers and knowledge to overcome obstacles, and in the process, they form a strong bond of brotherhood.
One idea could be that Percy and Triton have to team up to save the underwater kingdom from a new and powerful threat. They start off distrusting each other because of their different upbringings, but as they face challenges together, they learn to rely on one another.
Maybe Triton gets banished from the underwater world for some reason and Percy, being his half - brother, has to help him adapt to the human world. Along the way, they discover secrets about their family that were long hidden, and this brings them closer as brothers.
One idea could be that Percy and Triton have to team up to stop an ancient sea monster that is threatening the underwater kingdom. They start off not trusting each other but as they face challenges together, they learn to work as a team.
One idea could be Triton and Percy teaming up to fight a new sea monster that threatens both the underwater kingdom and the surface world. This would bring out their different powers and personalities as they strategize together.
One idea could be that Percy and Triton are forced to work together on a quest. Along the way, they start to understand each other's perspectives and develop an unlikely friendship that could potentially turn into more. Another plot could be that Triton gets injured and Percy has to take care of him, during which time their relationship deepens. Maybe Triton has some hidden knowledge about Percy's powers that he reveals during their time together.
Maybe they discover they have a long - lost relative who is in danger. So they team up, Percy using his water powers and Nico his underworld powers to fight the dark forces that are after their relative. During this, they grow closer as brothers and understand each other better.
Maybe they could have a story where they discover a secret about their family's past together. They'd have to deal with the revelations and how it affects their relationship. For example, they might find out that there was a powerful ancestor and they have to figure out how to use or protect the knowledge of this ancestor. This would involve a lot of character growth for both of them as they learn more about themselves through their family history.
One idea could be Triton initially disapproving of Ariel's relationship with a human, but as the story unfolds, he realizes the depth of her love and starts to support her in a new, more understanding way. This could involve some emotional conversations between them and a change in Triton's character.
Well, a great plot could be Ariel getting involved in a prophecy that only Triton fully understands. She's eager to fulfill it but Triton is hesitant because of the risks. Also, perhaps a group of sea creatures rebel against Triton's rule, and Ariel has to act as a mediator between her father and the rebels. Or there could be a situation where a powerful sea witch, different from Ursula, targets Triton, and Ariel uses her unique experiences with the surface world to save him.
Perhaps they go on a quest to find their long - lost family heritage. Along the way, they face various challenges that test their brotherly bond. They might have to cross a dangerous river that only Percy can navigate, but Jason has to use his wind powers to keep them from being swept away, while Nico uses his underworld powers to fend off the ghosts that lurk in the water.
One plot idea could be that Percy and Harry discover they are long - lost brothers and have to combine their magical powers to defeat a new, powerful dark force that threatens both the wizarding world and the world of Greek gods. For example, they might have to find a way to stop a dark wizard who has made a pact with a rogue Greek god to gain ultimate power.
One interesting Triton and Baby Percy fanfiction could be about Triton secretly watching over Baby Percy and protecting him from unseen threats in the underwater world. Maybe Triton uses his powers to create a magical shield around Percy's cradle.