Maybe there is a curse that has been placed on Gryffindor house which turns some of its members into slaves. The plot could revolve around finding the origin of the curse and a way to break it. Along the way, there could be internal struggles within Gryffindor as some might be too afraid to fight the enslavement while others are determined to break free. And it could also show how the other houses react to this strange and disturbing situation in Gryffindor.
If there were Gryffindor slaves in a fanfic, the plot could be about a powerful magical artifact that has been stolen and is being used to control the Gryffindor slaves. A group of young heroes, including some Gryffindor students who are still free, would embark on a quest to find the artifact and destroy it. This would involve them facing many challenges and obstacles, both magical and non - magical. It could also explore the relationships between the enslaved and the free Gryffindors, and how they all deal with this difficult situation.
One possible plotline could be that a dark wizard has somehow managed to subjugate some Gryffindor students and is using them for his own dark purposes, like extracting magic or performing dangerous tasks. The other Gryffindor students, along with students from other houses, would then have to come together to rescue their enslaved comrades. This would create a story of resistance and heroism against an unjust situation.
In most mainstream Harry Potter fanfic, the concept of 'Gryffindor slaves' is not a common or canonical idea. Gryffindor is known for its values of courage, chivalry and fairness, which are quite the opposite of slavery. However, in some very niche or non - traditional fanfics, an author might create a unique and unorthodox scenario where something like this could be part of the plot, but it would be far from the norm.
One interesting plotline could be Harry discovering new magical abilities as the heir of Gryffindor. Maybe he can communicate with the spirit of Godric Gryffindor who imparts ancient wisdom and powerful spells.
One reason could be a personal betrayal. Maybe a close friend from Gryffindor betrays Harry, and this makes him start to dislike the whole house. It's like when one bad apple spoils the bunch in his eyes.
One possible plotline could be Harry coming to power after a great war in the wizarding world. He then has to deal with rebuilding and unifying the different wizarding communities under his rule as emperor. He might face resistance from some traditional wizarding families who don't want to accept a new form of government.
In a 'Harry Potter is an assassin' fanfic, the plot could start with Harry being trained by an unknown and powerful wizard who has his own motives for creating an assassin out of Harry. This trainer could be someone from a far - off land or an ancient order. Harry then starts taking on targets within the wizarding world that are supposedly 'evil' but as he delves deeper, he realizes that things are not as black and white as he was told. His friends start to notice his strange behavior and he has to either come clean or keep lying to them. As the story progresses, Harry might have to make some tough choices between his loyalty to his friends and his new - found assassin duties, all while uncovering secrets about the wizarding world that were previously hidden.
One possible plotline could be that Harry has done something extremely dangerous or against the wizarding laws in the fanfic world. Lily, as his mother, feels that she needs to discipline him in a more severe way than just a talking - to. So she resorts to spanking as a last - ditch effort to make him understand the gravity of his actions.
Perhaps the plot involves a group of enslaved house - elves who decide to fight for their own rights rather than relying on the kindness of wizards. They could form an alliance with some of the human characters who oppose the slave - holding system. This would bring a new perspective to the story, as house - elves are often seen as subservient in the original series. It could also explore the complex relationships between different magical species and how they interact in a world full of inequality.
Well, Harry Potter himself could be a possible heir. He already has so many Gryffindor - like qualities. His courage and loyalty make him a strong candidate.
In the 'harry potter after hogwarts fanfic', a really interesting plot could be about the discovery of new magical creatures or lost spells. Harry, being the adventurous type, might go on quests to explore these new elements. He could also get involved in international wizarding relations, using his fame and experience to bridge gaps between different wizarding communities around the world. This would open up a whole new world of magic for the readers to explore.
Another plotline could involve a group of Death Eaters who are missing in action but are actually planning a huge comeback. They could be secretly gathering forces and creating new dark magic artifacts. The story could follow a young Auror who discovers their plot and tries to stop them before they unleash chaos on the wizarding world.