In 'Harry Potter is in Azkaban' fanfiction, there could be a storyline where Harry is sent to Azkaban due to political intrigue within the Ministry of Magic. Inside Azkaban, he finds other wrongly accused wizards and witches. Together, they form a sort of resistance. Harry, being the central figure, uses his knowledge of magic and his experiences with Voldemort to inspire them. They might start to plan a break - out that not only frees them but also exposes the corruption in the Ministry. Harry could also have some sort of spiritual journey in Azkaban, confronting his own inner demons and fears, which in turn gives him more strength to face the external challenges.
One possible storyline could be Harry's struggle to prove his innocence while in Azkaban. Maybe he discovers some dark secrets within the prison walls that are related to a larger threat to the wizarding world. Another could be his attempts to escape and the friends he makes or enemies he encounters during the process.
One possible reason could be that he's framed for a dark magic crime he didn't commit. Maybe a powerful dark wizard manages to plant false evidence on him. Another reason might be a misinterpretation of his actions. For example, if he uses a powerful spell in self - defense but it's misconstrued as an offensive and illegal spell.
One possible plotline could be that Harry is wrongly accused and sent to Azkaban. While there, the Dementors constantly torture him with their presence, draining his happiness and hope. Another could be that a dark wizard within Azkaban has a vendetta against Harry and uses dark magic to physically and mentally torture him. Or perhaps the prison system itself, with its harsh conditions and lack of proper care, is a form of torture for Harry, and he has to find a way to endure and escape while dealing with the psychological trauma.
One possible storyline could be that a powerful magic spell is cast on Harry by a dark wizard who wants to disrupt the wizarding world. This spell forces him to experience a transformation in his gender identity. Harry then has to struggle with not only his new identity but also how the people around him, like his friends Ron and Hermione, react to this sudden change.
One storyline could be that the mute child discovers they have a special power related to their muteness. Maybe they can silently communicate with ancient magic artifacts that no one else can. Another storyline could be that they are wrongly accused of a crime because they can't defend themselves verbally. Then they have to find a way to prove their innocence through their actions and non - verbal magic. A third storyline could be that they befriend a house - elf who also uses non - verbal communication, and together they uncover a secret plot within Hogwarts.
A story could be that Voldemort has somehow tapped into the power of the Greek underworld. Harry, as a Greek demigod, has to use his unique powers and the knowledge of Greek mythology to stop Voldemort. Along the way, he teams up with other demigods and wizards. He also has to face the trials set by the Greek gods themselves, as they are not entirely sure if they should support a wizard in their demigod affairs.
One possible storyline could be that the wizards from the Harry Potter world discover the Power Rangers' technology. They might be intrigued by the Rangers' morphers and Zords, thinking they could use them for their own battles against dark magic. For example, Hermione could study the technology to see if it could be adapted to protect Hogwarts better.
The OC could be part of a prophecy that involves their Sharingan. In the fanfiction, they are the only one who can see the true form of a new, powerful dark magic that is starting to spread through the wizarding world. With their Sharingan, they can trace the source of this magic back to an old, forgotten wizard who was banished long ago. Along the way, they face many challenges, including distrust from the Ministry of Magic and jealousy from other students. But in the end, they are able to save the wizarding world with their unique ability.
A possible storyline could be that Hogwarts is invited to participate in an international Academic Decathlon that includes both wizarding and Muggle schools. The Hogwarts students have to quickly learn about Muggle academic subjects while also showing off their magical knowledge. There could be challenges like a magical obstacle course that also tests scientific knowledge, and a debate where they have to use both magical and Muggle facts.
One possible storyline could be that in a final battle against Voldemort, Harry sacrifices himself in a way that no one could reverse. For example, he might use a powerful spell that requires his life force to destroy the last of Voldemort's Horcruxes. Another could be that he succumbs to a dark curse that was placed on him long ago, which was dormant until a certain event triggered it. Maybe a character that was thought to be an ally actually turned out to be a double - agent and cast a fatal spell on Harry.
One possible storyline could be that after the war, Harry and Fleur start to bond over their shared experiences of trauma and loss. They find comfort in each other and gradually fall in love. Another could be a story where Fleur has always had a secret admiration for Harry, and when she realizes he has feelings for her too, they decide to get married. Maybe in this fanfiction, they also have to face the challenges of different cultures, as Fleur is from Beauxbatons and Harry is from Hogwarts.