One possibility is that Ash stumbles upon Meltan in an unexpected place, like a hidden grove. He uses his Pokémon knowledge and skills to gain Meltan's trust and catches it. Maybe he uses Pikachu to show Meltan that they can be friends and partners. This could lead to new adventures as Ash trains Meltan and discovers its unique abilities.
In a fanfiction, perhaps Meltan is in trouble. It's being chased by some sort of Pokémon predator. Ash comes to its rescue. Meltan, feeling grateful, decides to join Ash. Ash catches Meltan not through force but through kindness. This then sets off a story where Meltan helps Ash in battles in unique ways, and they grow closer as trainer and Pokémon.
The plot could involve Ash on a quest to complete his Pokédex. He hears rumors about Meltan and sets out to find it. Along the way, he faces challenges from other trainers who also want to catch Meltan. Ash finally manages to outwit them and catch Meltan using his quick thinking and the bond he has with his existing Pokémon.
For Ash, catching Meltan could show his growth as a trainer. He would learn new ways to train a unique Pokémon like Meltan. Meltan itself would develop from a shy and possibly scared Pokémon to a confident one under Ash's care. Ash's bond with his other Pokémon might also change as they welcome Meltan into the group.
In a fanfiction, the story could start with Ash hearing rumors about a super - powerful Meltan and Poipole. He decides to go on an adventure to find them. Along the way, he meets a trainer who has some knowledge about these Pokémon. This trainer gives him some tips on how to catch them. When Ash finally finds Meltan, it's in a state of distress because it's lost from its group. Ash helps it and in return, Meltan decides to join Ash. For Poipole, Ash discovers it while exploring an ancient ruin. Poipole is attracted to Ash's kindness and the unique bond he has with his Pokémon. So, it willingly becomes part of Ash's team.
One possible plot could be that Ash hears rumors of Rayquaza's appearance in a far - off region. He sets out on a journey with his Pokémon friends. Along the way, he has to face various challenges and other trainers who also want to catch Rayquaza. Eventually, he uses his unique bond with his Pokémon and his strategic skills to outwit Rayquaza and catch it.
In another plot, Riolu could be a Pokémon that has been abandoned by its previous trainer. Ash stumbles upon it while on his journey. At first, Riolu is very distrustful of humans, but Ash shows it kindness and patience. Through Ash's training methods and the bond he forms with his other Pokémon, Riolu slowly warms up to him and allows itself to be caught.
It could be that Ash is on a journey to complete a special Pokémon collection. He hears about a rare Houndoom in a far - off land. When he finally finds it, he has to overcome not only the Houndoom's natural wariness but also various obstacles in the environment, like a maze - like forest. With his determination and the help of his Pokémon friends, he manages to catch Houndoom.
In the fanfiction, perhaps Ash catches Dratini during a quest. He hears rumors about a rare Dratini in a certain area. He goes there and finds Dratini being chased by some other Pokemon. Ash steps in to protect it and earns Dratini's trust. The story could then focus on their adventures together, exploring new regions and facing tough opponents with Dratini by his side.
Well, in the fanfiction, perhaps Ash catches Meowth to try and reform it. He might see that Meowth is not really a bad Pokémon at heart, just following the wrong crowd in Team Rocket. So he takes it under his wing, and they start to develop an unlikely friendship which changes both of them for the better.
One possible plot could be that Ash is on his Pokémon journey and stumbles upon a Haunter in an old, spooky forest. The Haunter might initially be mischievous, playing tricks on Ash and his Pokémon. But as Ash shows kindness and understanding, the Haunter starts to warm up to him. Eventually, Ash manages to catch the Haunter through a series of exciting battles and challenges, adding a unique and somewhat spooky addition to his Pokémon team.
One possible plot could be that Ash is on his journey and stumbles upon a lost and injured Sylveon. He decides to take care of it, and through their time together, they form a strong bond. Eventually, Sylveon decides to join Ash's team.
In this fanfiction, the plot might start with Ash hearing rumors about a strange and powerful Pokémon in a far - off location. When he goes to investigate, he discovers Deoxys. Deoxys could be on a mission of its own, like trying to protect an important energy source or a group of Pokémon. Ash decides to help Deoxys, and during their adventures together, they face many challenges. These challenges could be natural disasters, other powerful Pokémon, or even villains. Through their shared experiences, Deoxys comes to trust Ash, and in the end, Ash catches it.