In a 'harry talks to voldemort fanfic', the plot might involve Harry using his knowledge of Voldemort's past to try and create a connection. For example, he could mention the fact that Voldemort was once a student at Hogwarts like himself. Harry might hope that by showing understanding of Voldemort's journey to the dark side, he can convince him to turn away from his evil plans. Maybe Harry offers Voldemort a chance at redemption, suggesting that he could use his great power for good instead of evil.
One possible plot could be that Harry tries to reason with Voldemort about the futility of his dark ways. He might talk about how much destruction Voldemort has caused and how many lives have been lost. Harry could also try to appeal to any remaining shred of humanity in Voldemort, perhaps by bringing up his own orphan status and how they both lost their parents in a way, though for very different reasons.
It could be about Harry having a unique ability to communicate with dragons and using this to solve various problems in the wizarding world. Maybe he teams up with dragons to fight dark forces.
Maybe Harry has all of Voldemort's powers but uses them for good. He could start to look like Voldemort but with a kind heart, and he uses his new - found dark magic to fight off new threats that are even more powerful than Voldemort ever was.
In the 'harry joins voldemort fanfic', it could start with Harry being captured by Voldemort. Instead of killing him immediately, Voldemort decides to brainwash him. Through a series of dark magic spells and psychological manipulation, Harry starts to see Voldemort as a mentor. As time passes, Harry becomes an integral part of Voldemort's inner circle, helping him plan attacks against the wizarding world, believing that they are actually for a greater good as Voldemort has convinced him.
Well, one possibility could be that Voldemort adopts Harry as a way to control the wizarding world. He might think that by having Harry on his side, the resistance against him will crumble. Another could be that Voldemort discovers some sort of connection between him and Harry that makes him want to take Harry under his wing, perhaps related to some long - forgotten prophecy.
In this fanfic, perhaps Voldemort has some grand plan. He puts Harry in timeout to wait for the right moment. He might be using this time to gather his Death Eaters and prepare for a big showdown. Harry, while in timeout, could be thinking of ways to break free and defeat Voldemort once and for all.
Well, it could involve Voldemort having some strange newfound attraction to Harry and trying to make Harry his 'queen' in a very dark and twisted way. Maybe he uses dark magic to bind Harry to him and Harry has to find a way to break free.
I think Voldemort would be the most interesting. We rarely get to see his perspective in the original series. In a fanfic where Harry talks to him, we might get to see a more complex side of Voldemort. Maybe he'll show some vulnerability or a different motivation than just pure evil. It could be really fascinating to see how he reacts to Harry's words and if he is capable of any change.
In such a fanfic, the plot could involve Harry finding a long - lost magical artifact that reveals his connection to Voldemort as his heir. As a result, he starts to have strange dreams and visions similar to what Voldemort had. The wizarding world would be in chaos as they try to figure out if Harry is going to turn to the dark side. Harry himself would be in a moral dilemma, trying to decide whether to embrace this new identity or fight against it.
Well, it could be about Harry seeking the dragon's help to find a hidden magical item. Maybe the dragon knows the location of an ancient artifact that can defeat a dark wizard. So Harry has to communicate with the dragon, overcome his fear first, and then persuade it to share the secret.
Perhaps Voldemort discovers that there is a greater threat out there. In the fanfic, it could be that another dark force is emerging, and Voldemort sees Harry as an ally of sorts against this new threat. So, he decides to protect Harry in order to deal with this common enemy.