Often, there's a plot where their becoming Animagi is part of a school project gone wrong or right. They start it as an experiment and end up with real powers. In these stories, there are usually a lot of interactions with Hogwarts professors who are either supportive or skeptical. The whole process of learning and discovery is really interesting as they figure out how to control their new forms.
A common plot is that they become Animagi to help in a battle or against a dark force. Their animal forms give them unique abilities to fight or spy. For example, Harry as a stag might be able to run faster to carry messages, and Hermione as an otter could be very stealthy in water areas.
I recall a story where Harry becomes a stag, similar to his Patronus, and Hermione turns into an otter. In this fanfic, their Animagus forms play a crucial role in solving the mystery of a hidden magical artifact. The author does a wonderful job of portraying their growth as they master their new abilities.
One common theme is the deepening of their friendship. In these fanfictions, they often support each other in ways that weren't fully explored in the original books. For example, they might have joint magical research projects.
One common theme is friendship. Since Harry and Hermione are such close friends in the original series, many fanfictions explore the depth and growth of their friendship. For example, how they support each other through difficult times at Hogwarts, like dealing with exams or facing bullies. Another theme is their shared love for knowledge. Hermione is known for her studious nature, and in fanfictions, they often collaborate on academic projects or research within the magical world. This could involve uncovering secrets about ancient spells or the history of Hogwarts.
Self - discovery is another theme. As they swim, they might reflect on their own identities, their roles in the wizarding world, and their futures. This is often shown through their internal monologues during or after the swim.
A common plot could be their exploration of the Hogwarts grounds using the Marauder's Map. They might stumble upon some hidden passages or secrets that are related to the events of that year. Another one is dealing with the threat of Sirius Black. Hermione could be researching ways to protect Harry while Harry is more impulsive and wants to face the danger head - on. Also, there could be a sub - plot about their academic progress, like Hermione acing all her exams and trying to help Harry pass his, especially in subjects like Potions.
A common plot is the misinterpretation of Harry's actions. His friends might think he's being secretive about something dangerous, like a new form of magic he's discovered, when in fact he's just trying to protect them. Another plot could be that a new character enters the story and manipulates his friends against Harry for their own gain.
A common plot is that Dumbledore has been manipulating Harry from the start. He might have arranged events in Harry's life to lead him to a specific fate against Harry's will. For example, making sure Harry attended Hogwarts to be part of the fight against Voldemort.
One common theme is friendship deepening into something more. In many fanfictions, the events of the Goblet of Fire bring Harry and Hermione closer together in a way that makes them realize their feelings for each other go beyond just friendship. Another theme is the exploration of the magical elements. Since the Goblet of Fire is full of magic, fanfictions often expand on the magic in unique ways, like new spells or hidden magical artifacts related to the tournament.
Growth is a big theme. Harry and Hermione are growing up and their characters develop a lot during their third year. Fanfictions often show how they deal with new magical abilities, academic pressures, and personal relationships. Also, loyalty is a theme. They have to show loyalty to each other and to their friends as they face various challenges.
One common theme is power dynamics. With them being Lord and Lady, there's often exploration of how they handle power within the wizarding world. For example, they might use their new positions to bring about change in Hogwarts or the Ministry of Magic.