One plot idea could be that Harry discovers he has a connection to an ancient immortal race. Maybe he finds an ancient spell book that leads him to a hidden world of immortals where he has to learn their ways to defeat a new dark force threatening both the wizarding world and the immortal realm. Another could be that an ancient immortal takes Harry as an apprentice to train him in forgotten magic that could change the fate of Hogwarts.
Well, perhaps there could be a story where an ancient immortal has been trapped in a magical object at Hogwarts for centuries. Harry accidentally releases this immortal and in return, the immortal offers to help Harry uncover secrets about his parents. They then embark on a journey through time and different magical dimensions, facing various challenges along the way.
One idea could be a forgotten ancient battle magic spell being rediscovered during a dangerous time at Hogwarts. Maybe a student stumbles upon it in an old, dusty tome in the restricted section of the library.
One idea could be that the scarecrow comes to life and becomes a magical creature that helps Harry Potter in a dangerous task. Maybe it has the ability to sense dark magic and warns Harry of approaching threats.
Perhaps Orochi is a hidden figure in the history of the wizarding world that has been forgotten. Harry discovers some old texts in the Hogwarts library that mention Orochi in relation to a long - lost magical artifact. This leads him and his friends on a quest to find the artifact before it falls into the wrong hands, as it has the power to either control Orochi or be used by Orochi to gain ultimate power over the wizarding world.
One plot idea could be that Harry and Angelina team up for a special Quidditch training session for the younger students. They discover a new flying technique together that gives Gryffindor an edge in future matches. Another could be that they go on a secret mission within Hogwarts to uncover a hidden artifact that has been causing strange magical disturbances. And a third idea is that Angelina gets injured during a match and Harry uses some of his unique magical skills, learned from his various adventures, to help her recover faster than normal.
One idea could be a story where a character has a special power to resist Dementors' effects more than others. Maybe they discover a hidden spell or have a unique magical ability that they use to fight off Dementors when others are in danger. For example, a young witch or wizard who can emit a positive energy that counteracts the Dementors' despair.
One idea could be Norberta getting lost in the Forbidden Forest and Harry has to find her. Another could be Norberta growing ill and Harry, with his knowledge of magical creatures, tries to heal her. Maybe Norberta could get into trouble with some other magical creatures and Harry has to step in to protect her.
One idea could be to have a wizard from the Harry Potter world time - travel back to the era of ancient warriors. They could use their magic to aid or disrupt the battles of the ancient warriors, creating a whole new dynamic in the historical events. For example, a wizard could help an outnumbered group of ancient warriors by using magic to create illusions to confuse their enemies.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
Perhaps in the fanfiction, Snape and Harry are forced to team up to defend Hogwarts against a new, unknown dark force. They have to rely on each other's skills and knowledge, with Snape using his potions expertise and Harry his courage and Gryffindor - like bravado. Along the way, Snape shares some of his own experiences with dark magic and how to combat it, making Harry a more well - rounded wizard.
One idea could be that Tonks discovers a hidden vampire community in the wizarding world while on a mission related to Harry Potter. Maybe the vampires are being wrongly accused of attacking wizards, and Tonks, with Harry's help, tries to uncover the truth.