In some pokemon zombies fanfiction, the plot could center around a scientific research facility that was working on some new Pokemon - related experiments. However, something went wrong and it led to the creation of zombie Pokemon. The story could then follow the scientists as they try to reverse the process, while also dealing with the chaos outside as the zombie Pokemon spread across the region.
One interesting plot could be a group of survivors who find a hidden bunker filled with ancient zombie - fighting artifacts. They then have to figure out how to use these artifacts to not only fend off the hordes of zombies but also to stop a new, more powerful type of zombie that is emerging. Another plot might involve a character who discovers they have a special ability to control the zombies to a certain extent and must decide whether to use this power for good or for their own gain.
One interesting plot could be a trainer who turns into a Pikachu and has to navigate the Pokemon world from a different perspective. They might struggle with their new small size and electric abilities at first, but then learn to use them to their advantage in battles.
One interesting plot could be Ash forming a unique bond with each Pokémon in his harem. For example, he might have special training sessions with different Pokémon that are tailored to their individual strengths and weaknesses.
A plot where a character discovers a hidden Pokemon species that was never part of the original Pokemon Red game. This new Pokemon could have special abilities that change the dynamics of battles and exploration in the fanfiction.
One interesting plot could be about a pokemon that has been exiled due to being wrongly accused of a crime in the pokemon world. It then has to go on a journey to prove its innocence. Another plot might involve a group of exiled pokemon banding together to create their own little haven away from the judgmental eyes of the regular pokemon society.
One interesting plot could be a story where the protagonist discovers a rare and powerful pokemon that has been lost for centuries. This pokemon has unique abilities that no one has ever seen before.
One interesting plot could be the formation of a new Pokemon battle team within the high school. The characters, who are also Pokemon trainers, face challenges like rivalries with other teams and difficulties in training their Pokemon due to school work and social life.
In some fanfictions, Mewthree could be the result of a genetic accident involving Mew and another powerful Pokemon. It has a split personality - one side is gentle and wants to live in harmony with other Pokemon, while the other side is aggressive and wants to prove its superiority. A group of trainers must figure out how to bring out the good side of Mewthree and control its power.
A possible plot is that the shipwreck leads to a time - travel scenario for some of the Pokemon and trainers. They end up in a different era where they have to adapt quickly. This could involve dealing with Pokemon species that are extinct in their own time. Also, there might be a plot where the shipwreck survivors find an ancient artifact on the island that has a special connection to Pokemon, and they have to protect it from those who would use it for evil purposes.
One interesting plot could be a character reincarnated as a Pikachu and having to navigate the world of Pokemon using only Pikachu's abilities like electric shocks and agility. Another might be reincarnated as a rare Pokemon and trying to avoid being captured by trainers. Maybe also being reincarnated as a Pokemon trainer's pet and experiencing the bond from the Pokemon's perspective.