The plot might involve a strange scientific experiment gone wrong. Ash volunteers for an experiment that aims to enhance the bond between trainers and Pokemon. However, something goes haywire and he begins to transform into a Pokemon. In his new form, he has to participate in Pokemon battles in a very different way. He might be able to use moves in ways that normal Pokemon can't because of his human knowledge. His transformation also causes chaos in the Pokemon community as they are not used to a human - turned - Pokemon, and his friends struggle to keep his identity a secret while trying to reverse the process.
In this fanfiction, if Ash turns into a pokemon, perhaps he becomes a Charmander. He could struggle with being in a different form. He might have to adapt to the life of a fire - type pokemon, facing challenges like being weak against water - type attacks and trying to find a way to change back while still having adventures with his friends, who now have to protect him in a different way.
One consequence could be that Ash loses his human identity to some extent. His friends might not recognize him at first, and he would have to figure out how to communicate that he is still Ash inside. Also, his Pokémon might be confused about their trainer's new form.
Well, the plot could involve Ash visiting a dairy farm where there are many Miltank. One particular Miltank is very shy and doesn't produce milk like the others. Ash decides to help it gain confidence. He uses his knowledge of Pokemon and training methods. He spends time with the Miltank, shows it kindness, and eventually, the Miltank overcomes its shyness and becomes one of the best milk - producing Miltank on the farm. This story could also include Ash learning about the importance of different types of Pokemon in different industries, like the dairy industry in the Pokemon world.
Well, it could be about Ash experimenting with new battle strategies. For example, he might try to combine different Pokemon moves in unexpected ways. Maybe he'd experiment with training his Pokemon in unique environments like a mysterious forest filled with rare Pokemon. This could lead to his Pokemon evolving in new and exciting ways, and he could discover new Pokemon abilities along the way.
A possible plot could be that Ash discovers a rare male Pokemon that has unique powers. He decides to catch it and train it. Along the way, he faces other trainers who also want this Pokemon. This leads to intense battles and strategic planning on Ash's part to keep his new male Pokemon friend safe and to help it reach its full potential.
Well, perhaps the story focuses on a Pokemon who was previously part of a bad group. After realizing the error of its ways, it turns over a new leaf. It might then go on a journey to atone for its past actions. This Pokemon could befriend other Pokemon it once fought against and together they work towards a common good like protecting a forest from a natural disaster.
The plot could involve a threat to Alola. Ash and Lillie, now in love and getting married, have to put their wedding plans on hold to save the region. Along the way, they discover that their love gives them extra strength. They defeat the threat together and then have a grand wedding celebration, which is attended by Pokemon trainers from all over the world.
One possibility is that Ash's Ekans could be a special one with unique abilities. Maybe it has a hidden power that helps Ash in battles against stronger opponents. For example, it could have a super-effective type of attack that is not common among Ekans, like a special poison - type move that can paralyze opponents for a long time.
In such a fanfiction, perhaps Ash betrays his friends for power. He might be lured by an evil organization with the promise of rare Pokémon or ultimate power, and in the process, turns his back on Pikachu and the others.
One possible plot could be that Ash encounters a female Tyranitar in the wild. The Tyranitar is initially hostile but Ash manages to show kindness and understanding. They then form an unlikely friendship. Ash might help the Tyranitar when it's in trouble, like when it's facing a more powerful Pokemon. And together they might explore new areas and face various challenges in the Pokemon world.