One possibility is that there is a DNA test involved in the 'Charlie finds out Miles is her dad fanfic'. Charlie could have been looking into her family history for some reason, and the test results show that Miles is her father. This could lead to a series of events where they have to get to know each other on a completely different level. Miles may have a whole other family or life that Charlie is now a part of, and they both need to adjust to this new reality.
Perhaps Charlie overhears a conversation that makes her suspect Miles is her father. In the fanfic, the story could then focus on how Charlie approaches Miles to confirm this. There could be a lot of internal struggle for both of them. Miles might be hesitant to admit it at first, fearing how it will change their relationship. Charlie, on the other hand, might be desperate for answers and a real connection with her father she never knew she had.
Obviously, Charlie and Miles are the main characters. Charlie is the one who has the big discovery about Miles being her father. And Miles is the person who is revealed to be Charlie's dad, so he must have a big role in the story as well, with his own backstory and reasons for why this situation has come about.
Well, the fanfic could show how Legolas' princely status affects his relationships in the fellowship. Gimli might be a bit more grudgingly respectful at first. And as for Frodo, he could be in awe and see Legolas in a new light, perhaps relying on him more for protection as he's not just an elf but a prince. The story could also involve Legolas having to make decisions based on his princely duties while still being part of the fellowship on their quest.
Well, if Clint discovers Coulson is alive in a fanfic, it could start with Clint being in disbelief. He might question how it's possible at first. Then, as he realizes it's true, he could feel a mix of emotions. There could be a sense of relief, because Coulson was like a friend and mentor to him. They might start to share stories of what they've been through since they last saw each other. And this new - found reunion could be the start of a whole new adventure for them, perhaps even leading to a new team - up against a common enemy that they thought they couldn't face without each other.
Another development could be that Sakura starts to develop feelings for Naruto as she spends more time thinking about his love for her. She might notice things about him that she never paid attention to before, like his kindness and determination in a more romantic way.
Well, in '18 miles out' fanfiction, perhaps it focuses on the challenges of survival during that 18 - mile trek. It might show how characters use their skills, like combat against walkers or finding food along the way. They could also encounter other survivor groups, and there could be conflicts or alliances formed depending on the situation.
In the fanfic, it might lead to a story where Fenrir tries to protect Hermione in his own way. Since she's his mate, he could see her as something precious to him. This might put him at odds with other dark forces in the wizarding world who might want to harm Hermione for various reasons. It could also cause a stir among Hermione's friends, like Harry and Ron, who would be very suspicious of Fenrir's intentions towards her.
In some fanfics, Harry could find out he has distant relatives from the Potter family who live in a far - off land. These relatives could be part of a different wizarding culture. When Harry meets them, he gets to learn about different types of magic and different ways of living in the wizarding world. He might also discover that his family has a much bigger role to play in the overall wizarding history than he thought.
It could be that the pregnancy is a sign of a prophecy coming true in a very unexpected way. In the wizarding world, prophecies often have strange and convoluted ways of manifesting. Harry might discover that this pregnancy is linked to a greater destiny for him and the wizarding world. Maybe the child he's carrying will be a powerful force for good or evil, depending on how things play out. His relationship with Ginny would also be greatly affected. She would have to deal with her own feelings about Harry's situation, and they would need to work together to face this extraordinary event.
The plot might be that Blossom discovers this prince - like character in a different dimension. She has to travel there frequently to see him. Along the way, she discovers more about his world and its problems. And she uses her powers to help him and his people. In the process, their relationship deepens. But then there's a danger that the connection between their two worlds might be severed, and they'll be separated forever.
Maybe they are both in a school setting where they are part of a secret club. They accidentally stumble upon a mystery that threatens the safety of the school. Charlie's quick thinking and Matteusz's knowledge of certain arcane things help them to solve the mystery and save the day.