In some fanfictions, the Dark Prince might form an unlikely alliance with his enemies to fight a greater evil. For example, teaming up with the Ministry of Magic, which he previously opposed, to stop a powerful dark wizard from taking over the wizarding world. This would involve a lot of character development and trust - building among the characters.
One interesting plot could be the Dark Prince having to face his inner demons while trying to protect Hogwarts. Maybe he discovers a new, dark magic that he must either control or destroy.
Another plot could be the Dark Prince's journey to discover his true identity. He might have been raised believing he was one thing, but through a series of events in the fanfiction, he learns that his heritage is far more complex. This could involve delving into his family's past, unearthing secrets, and dealing with the consequences of these revelations.
One interesting plot could be the dark prince's struggle with his inner darkness. Maybe he has to make a choice between following his dark instincts or a path of redemption. For example, he meets a character who shows him kindness and makes him question his ways.
One possible plot could be Harry being influenced by dark magic artifacts. For example, he might find an ancient cursed object that gradually corrupts his mind and makes him turn dark. Another could be that he is betrayed by those he trusts, which pushes him over the edge into darkness.
Well, in some 'Hermione and Harry Dark Fanfiction', there might be a plot where they enter a dark, alternate magical realm. In this realm, they have to rely on their friendship and skills in new ways. They could encounter dark versions of their friends and have to fight against them, which would really test their loyalty to each other.
Perhaps there's a prophecy that the others know about and they believe that by keeping Harry in the dark, they can change the outcome. They might think that if Harry knows the details of the prophecy, he'll act in a way that will lead to a bad end, so they're trying to manipulate events from behind the scenes without his knowledge.
One possible plot could be that Harry, influenced by his darker side, joins Voldemort to gain power. He might start to learn the Dark Arts from Voldemort directly. Another plot could be that Harry believes Voldemort has some secrets about his family that he can only learn by getting close to him. Also, it could be that Harry is tired of the Order's way and thinks Voldemort's methods are more efficient in achieving his own goals.
One interesting plot could be Harry's struggle with his newfound dark powers. He might initially resist the pull of the dark side but gradually find that the power it offers is alluring. For example, he could use the dark magic to protect his friends in ways he couldn't with normal magic, but at the cost of his own moral compass.
One interesting plot could be the discovery of long - hidden dark magic spells within Hogwarts. Maybe a character stumbles upon a secret chamber filled with forbidden knowledge.
One interesting plot could be the exploration of the dark underbelly of the wizarding world economy in fanfiction. Maybe how certain dark artifacts are traded on the black market and how it affects the overall power balance among wizards.
One interesting plot could be the formation of an unexpected alliance within the Dark Brotherhood in the Harry Potter universe. For example, a character who was initially thought to be on the side of good might be forced to work with the Dark Brotherhood due to some dark magic threat that only they seem to have the knowledge to combat. This could lead to a lot of internal conflict as the character struggles with their own moral compass while trying to survive in this new and dangerous situation.
Perhaps there is a plotline where Harry, as the dark prince, forms unexpected alliances. He might team up with characters who were once his enemies, but now they see a common goal in his new identity, which could lead to some really complex and exciting story developments.