In a 'Harry and Sirius join Voldemort' fanfiction, it might start with Voldemort making a very tempting offer. For Harry, it could be something related to saving his friends or family. Sirius might be lured by the idea of protecting Harry in a different way. However, once they join, they would face a moral dilemma. They would have to pretend to be on Voldemort's side while still holding onto their own values. And there would be a lot of internal conflict as they see the evil deeds happening around them.
Well, if Sirius takes Harry to Voldemort in a fanfic, it would be a huge deviation from the normal story. One possibility is that Sirius is trying to make some sort of deal with Voldemort to save others. But Voldemort is not one to be trusted. Harry, being the Boy Who Lived, is a valuable asset to Voldemort for his own dark purposes. It could lead to a tense stand - off where Harry has to use his own wits and magic, even at such a young age, to try and escape the clutches of the Dark Lord.
Some might write it to explore a different side of the characters. It's a way to show how Harry and Sirius could be pushed to their limits and what they would do in extreme situations.
Well, if Harry is captured by Voldemort in fanfiction, it could lead to some really dark and intense scenarios. Voldemort might torture Harry to get information about the resistance. Harry, on the other hand, could be secretly planning an escape while pretending to be broken. There could also be a rescue mission by his friends, which would be full of danger and drama.
One possible plot could be that they are forced to join Voldemort under some sort of dark magic compulsion. Maybe Voldemort has a new powerful spell that he uses on them to make them his servants. Then they have to struggle with their own moral compasses while doing his bidding, and secretly try to find a way to break free and defeat him from the inside.
Well, if Harry Potter were to join a Khal in a fanfiction, it might start with Harry being somehow transported to the world of the Khal. He'd probably be quite confused at first. But his quick - witted nature would soon help him adapt. He could share his knowledge of magic with the Khal, which might change the power dynamics in their community. For example, they could use magic to improve their living conditions or gain an edge in trade. On the other hand, Harry would also have to deal with the strict social hierarchy and traditions of the Khal. It could be a story of him trying to find his place while still holding on to his own values from the wizarding world.
In such a fanfiction, Harry might be tortured for information about the Order of the Phoenix. Voldemort could try to turn Harry to the dark side, using threats against his friends.
There could be a situation where Voldemort tries to protect Harry from other threats. For example, he might fight off other dark wizards who want to harm Harry, which is a complete reversal of their normal relationship.
In such a fanfiction, Harry might go to Voldemort to try and reason with him. Maybe he believes there's a chance to end the war without more bloodshed. He could offer Voldemort a way out, like exile instead of death.
In this kind of fanfiction, Harry and Voldemort might be forced to have intense conversations. They could start to understand each other's motives better. Maybe Harry tries to convince Voldemort to give up his dark ways.
Well, Sirius would surely focus on making Harry as self - sufficient as possible given his blindness. He might train Harry to use his wand in a more instinctive way, relying on muscle memory and his other senses. Maybe Harry would learn to sense the presence of dark wizards through vibrations in the air or changes in temperature that normal wizards might not notice.