One exciting plot twist could be that while running, they stumble upon a hidden passage that leads to a secret wizarding community that has been in hiding from the Ministry. This community has its own set of rules and magic that Fred and Hermione have to adapt to quickly.
Maybe they run into a magical creature that initially seems menacing but actually turns out to be a helpful ally. For example, a large, growling beast that scares Umbridge away and then guides Fred and Hermione to a safe place. In the fanfiction, this could add an element of mystery and danger as they first encounter the creature not knowing its true nature.
One common element is the use of magic in creative ways to evade Umbridge. For example, Fred might use his Weasley - brand magic items, and Hermione would rely on her extensive spell knowledge.
One popular fanfiction with this theme might be 'Escape from Umbridge's Tyranny' which details their thrilling escape and the challenges they face along the way. It has great character development and an exciting plot.
Hermione, on the other hand, could become more daring. She is already brave, but this situation could push her to take risks she normally wouldn't. She might be the one to suggest trying untested spells or taking paths that are less known in order to escape. As they run, she could learn to trust her instincts more and not just rely on book knowledge.
It could also be that they run away for a more personal reason. Maybe Fred has feelings for Hermione that go against the social norms in the wizarding community. They run away to be together and explore their relationship away from the prying eyes and judgmental attitudes of their friends and family.
One common plot twist could be that Fred actually isn't the father after all, and there's a big mystery about who the real father is. This can lead to a lot of drama and conflict.
One interesting plot twist could be that while in each other's bodies, they have to deal with the opposite gender's social expectations at Hogwarts. For example, Hermione in Fred's body might struggle with the more laid - back attitude towards studies in Gryffindor among the boys. Another could be that they accidentally use magic in a way that reveals their situation to a few select characters, like Ron, who then has to help them keep it a secret. And a third plot twist might be that they start to understand each other's personalities and insecurities better through this strange experience, which changes their relationship for the better in the long run.
One popular plot twist is when Hermione has to choose between Fred and her previous relationship with Ron. It adds a lot of drama to the story. Another is when Fred discovers a long - lost family secret that affects their marriage.
A possible plot twist could be that Hermione is a half - veela. This is not related to being a Muggleborn at all. The fanfiction could show how her veela heritage affects her magic and her relationships at Hogwarts. For example, it might make her more alluring and powerful in certain types of magic, like charms. This would completely change the way her character is typically portrayed in the original stories where she was thought to be a Muggleborn.
One great plot twist could be that Hermione is actually an undercover Auror in a world where the Ministry is corrupt. She has to pretend to be on their side while secretly gathering evidence against them. This adds a layer of mystery and danger to the story.
One interesting plot twist could be that Hermione, as a Gryffindor in the original series, starts to question the values of her own house because of her newfound admiration for Slytherin. Maybe she discovers a long - lost family connection to a Slytherin family, which makes her more empathetic towards their ways. Another could be that she uses Slytherin - like cunning to solve a problem that Gryffindor bravado couldn't handle, causing a rift between her and some of her Gryffindor friends.