In the 'harry locked in azkaban fanfiction', it's possible that Voldemort has a hand in getting Harry locked up in Azkaban. Harry, being the strong - willed wizard he is, tries to communicate with the other inmates to find out if there are any clues related to Voldemort's new plot. He also has to deal with the harsh conditions of Azkaban, like the cold and the constant threat of the Dementors sucking out his soul. But he doesn't lose hope and keeps looking for a way to escape and save the wizarding world from whatever danger Voldemort is planning.
It could be Dumbledore. He has great power and knowledge. He might have some secret plan all along. He could use his influence and magic to enter Azkaban and free Harry, especially if he discovers that Harry is wrongly imprisoned.
In the fanfiction, it could be that Daphne has some unique magical ability that she uses to protect Harry in Azkaban. They might encounter other inmates who are actually innocent too and together they start a mini - revolution against the unjust system of Azkaban. Harry, with his experience of facing Voldemort, might lead the way in finding a way out of the prison.
One possible plot could be that Harry and Ginny are wrongly accused and sent to Azkaban. They then have to find a way to prove their innocence while dealing with the dark and dreary environment of the prison. They might discover a conspiracy within Azkaban that is related to the real culprits they are being framed for.
One possible plot could be that Fem Harry grows up in the harsh environment of Azkaban, developing a tough exterior. She might discover unique magical abilities due to her unusual upbringing. For example, she could have an uncanny ability to sense the emotions of dementors, which she uses to her advantage. This could lead to her being a target for both the prison guards who fear her power and those outside who want to use her for their own gain.
Perhaps in this fanfiction, Harry inherits Azkaban due to some dark family secret. He then has to deal with the dark forces that have been lurking within the prison walls for centuries. He might find a way to use the prison's own dark magic against Voldemort's remaining followers who are hiding in the shadows.
One possible plot could be that after the war, the Ministry of Magic is in shambles. Harry Potter, being a hero, is given Azkaban as a form of trust. He then discovers that there are dark forces still lurking within the prison, and he has to fight them off while also trying to reform the prison system.
In this fanfiction, perhaps Harry goes to Azkaban to rescue someone. It could be a fellow wizard who has been unjustly imprisoned. He might have to use his skills and some new-found magic to navigate the dangerous and dreary corridors of Azkaban, all while avoiding the Dementors.
She could be framed by a dark wizard who has infiltrated the Ministry. Once in Azkaban, she meets an old wizard who imparts some forgotten magic to her. This new magic helps her break free from the Dementors' hold.
Well, perhaps he uses some powerful magic he's learned secretly. Maybe he has help from unexpected allies, like a magical creature that can bypass the prison's defenses.
One possible plot could be that Harry is framed for a serious crime he didn't commit. Maybe someone has used Polyjuice Potion to look like him while doing dark magic. The wizarding community, believing the false evidence, sends him to Azkaban. In Azkaban, he has to endure the Dementors and try to prove his innocence from within the prison walls.