One interesting plotline could be Hermione and the Malfoys having to work together on a secret magical project. Maybe it's something that could change the wizarding world, and they have to put aside their differences.
A possible plotline could also be Hermione being secretly adopted into the Malfoy family for some strange magical reason. This would force her to adapt to their way of life, and there would be a lot of tension and character development as she tries to keep her true self while fitting into the Malfoy household.
Another plotline might be Hermione getting trapped in a time - loop that involves the Malfoy family's past. She has to figure out how to break free while also dealing with the Malfoys in different time periods. For example, she might encounter a young Lucius Malfoy and have to convince him to help her without revealing too much about the future.
One interesting plotline could be Harry learning the pure - blood traditions from the Malfoys in a different way than he expected. He might gain a new perspective on the wizarding world's social hierarchy.
One interesting plotline could be Harry's struggle to adapt to the Malfoy family's pure - blood values while still holding onto his own sense of self. Another might be how he forms unexpected friendships within the Slytherin house. And there could also be a plotline about how his relationship with Draco Malfoy changes from enmity to a more brotherly bond.
Perhaps in the fanfic, the Malfoys help Harry because Draco has a change of heart after seeing the true brutality of Voldemort's regime. This could lead to the Malfoys providing Harry with a safe haven when he's on the run, which is a very interesting turn of events as they were once his enemies.
One possible plotline could be Harry growing up with the Malfoy's pure - blood ideals clashing with his own sense of right and wrong. Another might be his relationship with Draco, which could be a complex mix of rivalry and brotherly - like bond.
In some fanfictions, Hermione might be related to the Malfoys through a complex family secret. For example, there could be a long - lost family connection that was hidden for years. Maybe an ancestor from Hermione's family had a relationship with a Malfoy in the past, which led to some sort of blood - related connection that only gets revealed in the fanfiction world. This connection then changes the dynamics between Hermione and the Malfoys, leading to interesting plot twists and character developments.
One possible plotline could be Hermione trying to find a way to break the curse on her own. She might use her vast knowledge of magic from the library. Another could be her friends, like Harry and Ron, going on a dangerous quest to find the antidote for the curse. And perhaps there's a plotline where the curse has some unforeseen side effects that change her relationships with other characters.
A common plotline is an alternate universe where Snape is not as bitter and Hermione befriends him more easily. They could be involved in a battle against a new dark force, and their combined intelligence and magic powers are crucial for victory. Also, there could be a plot where Hermione accidentally enters Snape's mind through some experimental magic and discovers his deepest secrets, which then changes their relationship.
Perhaps a plotline where Hermione has to solve a mystery that the Marauders were involved in. The Marauders might have left behind some clues that only Hermione, with her sharp intellect and research skills, can decipher. This could bring her closer to understanding their true nature and the secrets of their time at Hogwarts.
In some fanfictions, Hermione might get involved in a Weasley family drama. For example, helping resolve a conflict between two Weasley siblings. This could involve her using her intelligence and problem - solving skills to bring the family back together. Also, there could be a plot where Hermione starts a magical project with the Weasleys, like creating a new spell or potion, which could lead to all sorts of unexpected events and discoveries.
One possible plotline could be Hermione getting involved in the Cullen family's vampire world and using her magic to help them in some way. Maybe she discovers a new spell that can protect them from their enemies.