In the fanfic, Ash and Misty might explore the Unova region's beautiful landscapes. They could come across a hidden lake where there are rare water - type Pokemon. Misty would be excited to study and catch them if possible. Ash would be there to support her and also learn more about water - type Pokemon from her.
One idea could be that Ash and Misty visit Unova for a Pokemon tournament. They meet new friends and face new challenges together. Misty could use her water - type Pokemon in creative ways against the Unova Pokemon's unique types.
Well, it could be about Ash and Misty exploring the Unova region, facing new Pokémon and making new friends. Maybe they join some local Pokémon contests or battles in Unova.
Perhaps in the fanfic, Ash has achieved a lot in his Pokémon journey, and Misty has also become a more skilled Pokémon trainer. When they meet again, they start to compare their experiences. Ash could show Misty his new and powerful Pokémon, and Misty could introduce Ash to some new training techniques she has learned. And then they decide to train together for a while to improve their skills even more.
In some fanfics, Misty might be portrayed as betraying Ash for power. For example, if there is a powerful trainer who offers Misty a chance to become an even greater trainer, but at the cost of leaving Ash behind. She could be tempted by the allure of advanced training techniques or rare Pokémon that this new opportunity presents.
In this fanfiction, they may face a new villainous team in Unova. This team could be causing trouble for the local Pokemon and trainers. Ash and Dawn would have to use their combined skills to stop them. Ash's battle skills and Dawn's ability to think on her feet during Contests would be valuable assets.
There could be Cilan, Iris, and the Gym Leaders in Unova. They might cross paths with Ash and Misty during their adventures.
Well, in the 'Ash and Misty joins Team Rocket fanfic', they could be brainwashed by Team Rocket's technology or some devious plan. Once they join, they might be given new uniforms and tasks. They could be involved in stealing Pikachu again, but this time from the other side. It would create a whole new dynamic in the Pokémon world, with their old allies now becoming their enemies.
In this kind of fanfiction, Ash and Charizard might encounter new Pokémon in Unova that they've never seen before. Charizard could have some really cool battles against Unova - native Pokémon. Maybe it would also meet some new friends or rivals. And Ash could learn new training techniques from the trainers in Unova to further improve Charizard's skills.
Ash might gain more recognition. In the Pokemon world, winning a league is a big deal. So, he could be invited to exclusive Pokemon events. For instance, he could be asked to give a speech at a Pokemon training seminar.
In such a fanfiction, Ash and May could encounter new and rare Pokemon in Unova. They might face tough battles against powerful trainers and gym leaders. For example, Ash could use his Pikachu in unique strategies against Unova's electric - type Pokemon that have different abilities compared to those in other regions.