One possible plot could be that after years of being marginalized and seeing the corruption in the wizarding world, Harry and Hermione decide to take matters into their own hands. They might start by gathering a group of like - minded witches and wizards who are also disillusioned. They could use their knowledge of magic, which they initially learned for good, to create a new regime. However, they gradually become consumed by power and start making darker decisions, like suppressing opposition and using dark magic for their ends.
Well, perhaps they become Dark Lords because they believe the current system has failed. Harry, having faced so many near - death experiences due to the inaction or wrong actions of the wizarding leadership, and Hermione, frustrated with the lack of progress in areas like house - elf rights. They could be influenced by a powerful dark artifact. Once on the path of the Dark Lords, they might begin to rewrite the laws of the wizarding world. For example, they could change the way magic is taught in Hogwarts, emphasizing more on power - based magic rather than the traditional moral - based magic.
In this fanfiction, they might become Dark Lords as a result of a time - travel accident. They go back in time and accidentally change some crucial events. This causes a ripple effect where they see the wizarding world going in a direction they don't like. So, they decide to take control. At first, they might have good intentions, like trying to prevent Voldemort from ever rising. But as they gain more power, they start to see themselves as the only ones who can truly rule the wizarding world. They start to use Unforgivable Curses against those who oppose them, and their friends like Ron are left to either join them or try to stop them.
One possibility is that Harry's love for Hermione drives him to believe that the only way to protect her is by taking on the power of a Dark Lord. He might see the existing wizarding world as too corrupt or dangerous to keep her safe. So, he starts to study dark magic, gradually changing his nature. He could form new alliances with dark creatures or wizards who were previously shunned. This would put Hermione in a difficult position as she has always been on the side of good, but her love for Harry might make her question her own beliefs and try to sway him back to the light.
Ron would be devastated. He's been their best friend for years. He'd probably try to talk them out of it at first. If that fails, he might have to choose between loyalty to his friends and what he believes is right. The Hogwarts professors, like Dumbledore (if he were still alive in the fanfiction), would be very concerned. Dumbledore would likely see it as a great loss of two of the brightest lights in the wizarding world. He might try to find a way to reverse whatever led them down this dark path.
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.
One possible plot could be that they sing to cheer up their friends at Hogwarts during a difficult time, like after a battle or when everyone is feeling down because of exams. Their singing could have some magical effect that lifts the spirits of those around them.
The plot could involve some conflict too. For example, Hermione might initially think it's a joke or be hesitant because she's so focused on her studies for the Triwizard Tournament. Harry would then have to convince her that he's serious and that they can still balance the ball with her studies. Or there could be jealousy from other characters who also had their eyes on Hermione for the ball.
One possibility is that they leave to find a way to end the war secretly. They might journey to a far - off place to seek ancient magic or knowledge that could turn the tides without more bloodshed. Maybe they go to a hidden wizarding community that has been isolated from the conflict and holds the key to a peaceful resolution.
If Harry and Hermione become a couple in fanfiction, it could lead to a more in - depth exploration of their individual characters. Hermione would be more relaxed as she has Harry's love and support, and she might be more open to trying new things outside of her usual strict study routine. Harry, on the other hand, would become more confident in his decision - making. They would probably have some really sweet moments together, like late - night walks around the Hogwarts grounds talking about their future and how they can use their magic to make the world a better place.
Well, they could find that becoming Lord and Lady comes with a prophecy. This prophecy states that they are the key to uniting different factions of the wizarding world. They start by hosting grand balls and events at their new lordly abode to bring people together. Along the way, they discover a plot by a group of dark wizards who want to stop them from fulfilling the prophecy. So they have to use their wits and magic to outsmart the villains.
Perhaps Harry discovers some dark secrets about the wizarding world that make him lose faith in the good side. For example, he might find out that some of the so - called good wizards have been involved in immoral acts. This disillusionment leads him to think that the dark side might be a better option. As he joins them, he starts to abuse his power, using dark magic to get revenge on those who he believes have wronged him.
One possible motive could be revenge. If someone he loves, like Ginny or Hermione, is seriously hurt or killed by the wizarding community's negligence or by someone who is supposed to be on the good side. Harry's love for them could turn into a burning desire for vengeance, and he might see the dark side as a way to get that revenge, as they are not bound by the same moral constraints as the good wizards.