There are quite a few interesting plot ideas. For example, a plot where a group of trainers team up to complete the Unova Pokedex in a unique way, like only using Pokemon they find in specific areas of the region. Or a story that follows a young scientist who is trying to update the Unova Pokedex with new information about Pokemon evolutions that were previously unknown. It could also be a fanfiction about a Pokemon that has been misclassified in the Pokedex and the journey to correct that mistake.
In Pokemon Unova Pokedex fanfiction, an exciting plot could involve a time - traveling trainer who goes back to the early days of the Unova region to see how the Pokedex was first assembled. Another plot idea is a Pokemon that has a symbiotic relationship with another Pokemon, but this relationship was never noted in the Pokedex, and the story is about the discovery of this connection. Also, a story where a trainer uses the Unova Pokedex to track down a legendary Pokemon that is said to be the key to unlocking a great mystery in the region. This kind of plot can create a lot of adventure and mystery in the fanfiction.
One idea could be a story where a trainer discovers a hidden or rare Pokemon in the Unova region that isn't fully documented in the Pokedex yet. Another could be a fanfiction that focuses on the backstories of the Unova Pokedex creators and how they came to know about all the Pokemon in the region. Maybe a story about a Pokemon that has a special ability that changes how it's classified in the Pokedex.
Ash could encounter a legendary Pokemon in the Unova League that decides to help him in his battles. This would be a huge advantage and also a great plot twist.
Well, Reddit can be a great place to find Pokemon Unova Pokedex fanfiction. There are various Pokemon - centric subreddits where users post their creative works or link to them. Also, Tumblr has a large community of Pokemon fans who might be creating and sharing fanfiction related to the Unova Pokedex. You just need to use the right tags when searching to narrow down the results.
One interesting story could be about a Pokedex holder's journey to discover a rare and powerful Pokemon. They might face various challenges and meet unique characters along the way.
One idea could be that Ash and May both enter a new Unova - based Pokémon tournament. Along the way, they discover a new and rare Pokémon species that is crucial to the balance of the Unova ecosystem. They have to team up not only to catch it but also to protect it from a group of poachers. This would bring in elements of adventure, friendship, and Pokémon - related action.
One idea could be Ash and Gible entering a Unova - region - based Pokémon tournament together. They face tough opponents and along the way, Gible evolves into Gabite and helps Ash reach the finals. Another could be that they stumble upon a mysterious cave in Unova filled with rare Pokémon and they have to work together to get out while protecting the Pokémon inside.
One idea could be Ash starting in Unova with a new set of Pokemon he catches right away. Maybe he meets a unique and rare Pokemon that no one has seen before in that region. Another could be that he has to face a new type of villainous team that has different motives compared to the ones in other regions.
There could be stories about the adventures of different Pokedex holders. For example, they might encounter rare Pokemon, explore uncharted regions, or face off against powerful villains. The Pokedex holders could also have unique relationships with their Pokemon that are explored in these fanfics.
There are also fanfictions where the OC is a traveling merchant in Unova. They trade rare Pokemon items and in the process, they come across a group of Pokemon thieves. The OC uses their wits and the help of their trusty Pokemon partner, which could be an OC - created unique Pokemon hybrid, to outsmart the thieves and return the stolen items to their rightful owners.
One interesting storyline could be about a trainer who discovers a rare and powerful Pokemon in the Unova region that has been lost for centuries. This Pokemon could have unique abilities that change the way battles are fought in the fanfic.
One interesting plotline could be the protagonist's first encounter with a rare Unova Pokemon. It might be a unique take on how they bond and start their journey together.