A fanfiction could explore what happens when a Pokemon from a different region accidentally ends up in the Pokemon Yellow world. How does it interact with the native Pokemon? And how does the trainer deal with this unexpected situation? It could lead to all kinds of interesting adventures and battles.
One idea could be to focus on a new trainer's journey in the world of Pokemon Yellow. They could start with a Pikachu that has a unique ability not found in the original game.
A great plot could involve a time - travel aspect. The protagonist is sent back to the time when Pokemon Yellow was first set, and they have to use their knowledge of modern Pokemon training and battling to change the course of history in the Pokemon world. They might also meet the original trainers from the game in a different way and form new alliances.
A great plot for Pokemon Adventures fanfiction could be centered around a Pokemon with amnesia. The trainer then tries to help the Pokemon remember its past, which leads them on a journey filled with various challenges and revelations. It could also involve the discovery of a hidden Pokemon society that has its own rules and customs. This would add an element of mystery and exploration to the story. Additionally, a story about a trainer who is able to communicate with Pokemon in a unique way, like through dreams or telepathy, could be really interesting.
Perhaps a fanfiction where the main character discovers a time - traveling device in the Pokemon world. They travel back to the very beginning of the Pokemon Red and Yellow era and have to prevent an event that would change the future of the Pokemon world in a bad way. Along the way, they meet the original Professor Oak as a young man and help him with his early Pokemon research.
One idea could be a story where the main character discovers a new, rare Pokemon in an unexpected place, like in a hidden cave in Viridian Forest. Another could be a fanfiction where the Pokemon trainers from Red and Yellow team up to face a new, powerful villain who has a unique ability to control Pokemon in a different way than the usual villains in the games. Maybe also a story about a trainer's Pokemon evolving in a very different way due to some strange phenomenon in the Kanto region.
A cool plot could be that Lance, in the Pokemon Yellow world, decides to start a new type of Pokemon training school. He recruits the protagonist from the game as his first student. Together, they develop new training techniques and discover new Pokemon evolutions. But an old rival of Lance hears about this and tries to sabotage their efforts. So they have to not only deal with the challenges of training and discovery but also fend off this rival who is jealous of Lance's new project.
One idea could be exploring an alternate version of the Gold story where the protagonist teams up with a rare and powerful Pokemon from the start. This would change the power dynamics and how he faces challenges.
One idea could be a story where the main character discovers a new and extremely rare Pokemon in an uncharted region. Another could be a tale of a Pokemon trainer who has to team up with their rival to save a group of endangered Pokemon from an evil organization. Or perhaps a story about a Pokemon with unique abilities that gets separated from its trainer and has to find its way back through various challenges.
A crossover with a superhero universe would be cool. Imagine Pokémon in a city full of superheroes. Charizard could team up with a fire - based superhero to fight a powerful villain. The Pokémon's unique abilities would add a new dynamic to the superhero battles.
One idea could be a story where Red and Yellow have to team up with their Pokemon to stop a new and powerful villain who is stealing rare Pokemon. Another could be a story about their journey to discover a hidden Pokemon species that is said to have special powers. And they could also face challenges like a natural disaster in the Pokemon world and have to use their skills and Pokemon to survive.
A possible plotline could be that Red and Yellow's paths cross in a more dangerous and mysterious region. They have to work together to uncover a dark secret about a powerful organization that is using Pokemon for evil purposes. This would involve a lot of action, as they battle against the organization's henchmen and try to rescue the captured Pokemon.