One common plot is Hermione being an unexpected champion. Maybe she gets chosen by the Goblet of Fire due to some magical interference or a misunderstanding. Another plot could be her facing unique challenges during the tasks. For example, in some fanfictions, she uses her vast knowledge to outwit the challenges in a different way than the original champions. Also, there are often plots where Hermione has to deal with the jealousy and suspicion of her peers, since she's not supposed to be in the tournament in the first place.
Some fanfictions might have a plot where Hermione's participation in the Triwizard Tournament changes the relationships between the characters. For instance, her newfound confidence and skills during the tournament could attract the attention of other students in a romantic way. Or it could cause a rift between her and some of her friends if they feel she's getting too much attention. There could also be plots where Hermione discovers a hidden conspiracy within the tournament, perhaps related to dark magic or a political plot among the wizarding schools.
One interesting plot could be a character who is an underdog in the academic Triwizard Tournament. They might not be as well - known or as powerful as the others at first. But through their hard work, they discover a unique magical ability that gives them an edge in the challenges. For example, they could have a special connection to an ancient magic that helps them solve a difficult riddle in one of the tournament tasks.
There are fanfictions where Hermione and Fleur become friends during the Triwizard Tournament. In some stories, they start to see past their initial rivalries. Fleur might initially see Hermione as just a book - smart girl, but as they face the challenges of the tournament together, they develop a mutual respect. Maybe they work together on the Yule Ball preparations within the context of the tournament, which helps to strengthen their bond.
One possible fanfiction could be about Harry and Hermione teaming up secretly during the Triwizard Tournament tasks. They might use their combined knowledge and skills to outwit the other competitors. For example, in the maze task, they could have a special code to communicate and find their way to the Triwizard Cup faster than anyone else.
Maybe in the fanfiction, there's a plot twist where Hermione discovers a hidden rule in the Triwizard Tournament that allows her to form an alliance with all the champions instead of competing against them. This would change the whole dynamic of the tournament and lead to a completely different kind of story.
There might be a fanfic where during the Triwizard Tournament, Harry gets cursed and Hermione has to find a way to break the curse. She races against time, using every spell and potion she knows. Meanwhile, she also has to deal with the tournament tasks on Harry's behalf. In the end, through her determination and love for Harry, she manages to break the curse and they both complete the tournament in an unexpected way.
One common plotline is that Hermione participates in the Triwizard Tournament instead of Cedric. This gives her and Harry a whole new dynamic as they face the challenges together. Another plotline could be that there's some sort of magical interference during the Tournament that makes Harry and Hermione realize their deeper feelings for each other. For example, a spell gone wrong that makes them share their innermost thoughts.
Harry and Ron would be her most likely allies. They are her best friends, and even if they might be initially shocked or jealous of her being in the tournament, they would surely come around to support her. Another likely ally could be Cedric Diggory. He's a fair - minded and kind wizard, and he might see Hermione's intelligence and skills as an asset and offer to help or at least be friendly towards her.
A common plotline is that of Hermione and Fleur teaming up against the other competitors. This is interesting as it subverts the expected rivalry. They can use their combined strengths to overcome challenges that neither could face alone. For example, Hermione's strategic thinking paired with Fleur's beauty - based magic can be a formidable combination in tasks like the maze.
In some fanfictions, Hermione might be developed as more of a rebel. For example, she could be tired of always following the rules in the Triwizard Tournament and decides to break a few to gain an advantage. This shows a different side of her, one that's willing to take risks.
Well, a prevalent theme is power. The veela possess a certain kind of power that can either be used against Draco or be harnessed by him in the Triwizard Tournament. This power dynamic is explored in different ways in different fanfictions. Some stories show Draco trying to gain power through his association with the veela, while others show him trying to resist the power the veela have over him to maintain his own identity during the tournament.