A really interesting plot twist in some 'Prisoner of Azkaban' fanfictions is the role of Hermione. In some, she discovers a new form of magic that allows her to communicate with animals on a whole different level. This then leads to her finding out that Buckbeak is not just an ordinary Hippogriff, but has a special connection to an ancient magic in Hogwarts. This new information she has then becomes a major factor in how the story unfolds, especially in relation to Sirius Black and his escape.
When it comes to Harry in these fanfictions, his relationship with his parents' past is often delved into in new ways. He might discover that his father had some unfinished business at Hogwarts that is now affecting the present. And this new discovery could change his perception of himself and his role in the wizarding world. In addition, Snape's character can be explored in a less antagonistic way. Fanfic writers may show his hidden motives for protecting Harry that go beyond his love for Lily. Maybe he has a grander plan to save the wizarding world that involves Harry in a more complex way.
The 'Prisoner of Azkaban' has such a rich and complex plot, and fanfictions allow fans to explore different aspects of it. For example, they can delve deeper into the relationship between Harry and Sirius. In fanfiction, writers can create new scenarios and conversations that the original book might not have had time for.
One common plot idea is exploring Sirius Black's life more in - depth. Maybe a fanfiction could focus on his time in Azkaban before his escape, showing his mental state and how he coped. Another idea is changing the roles. For instance, what if Hermione was the one who was wrongly accused instead of Sirius? It would create a whole new dynamic.
The fanfics that expand on the relationship between Harry and his father's friends are also really good. In some, you can see how Remus Lupin might have tried to guide Harry in a more fatherly way, similar to how James Potter would have. They can be quite heartwarming and give a different perspective on Harry's growth at Hogwarts.
You can start by looking on fanfiction websites like FanFiction.net or Archive of Our Own (AO3). These platforms have a wide variety of fanfictions related to 'Prisoner of Azkaban'. Just use the search function and type in relevant keywords like 'Prisoner of Azkaban' and 'Hogwarts' to find some great reads.
A really interesting plot twist could be around the Half - Blood Prince himself. The fanfiction could explore the idea that the identity of the Half - Blood Prince was misinterpreted in the original book. Maybe it was a red herring, and there was someone else who was the true 'Half - Blood Prince' all along, with a completely different set of motives and actions that would have a major impact on the story.
One great fanfic could be 'The Lost Time in Azkaban'. It focuses on a new character who discovers a hidden mystery related to Sirius Black's time in Azkaban. Another is 'Hogwarts during the Prisoner's Threat' which delves into how the students' daily lives were affected by the news of the escaped prisoner. There's also 'A Different Perspective on the Prisoner' that tells the story from the point of view of a Hogwarts ghost.
You can try some popular fanfiction websites like Fanfiction.net or Archive of Our Own (AO3). On Fanfiction.net, you can use the search bar and type in 'Prisoner of Azkaban' to get a list of relevant fanfictions. AO3 also has a great collection and advanced search options to help you narrow down to the exact type of fanfiction you're looking for based on tags such as characters, relationships, and genres.
A cool plot twist might be that the time - turner Hermione uses has some unforeseen side effects. Instead of just allowing her to attend more classes, it starts to create glitches in time that cause different events from the past to bleed into the present. For instance, old spells from the founders of Hogwarts start to randomly appear in the corridors, and the characters have to figure out how to stop this chaos while also dealing with the Sirius Black situation.
One interesting plot twist could be that a minor character from Hogwarts, like Neville, discovers a hidden power within the Deathly Hallows that was previously unknown. Maybe he realizes that the Elder Wand has the ability to not only transfer power through combat but also through acts of self - sacrifice, which completely changes the way everyone views the power of the Hallows.