In a fanfiction where Sirius Black has a kid, the story might center around the kid's discovery of Sirius's past. The kid could find out about Sirius's time in Azkaban and how he was wrongly accused. This could lead to a journey of the kid trying to clear Sirius's name in the wizarding world while also dealing with the challenges of growing up as the child of a well - known figure.
Well, the plot could involve Sirius trying to protect his kid from the dark forces that are still after him. Maybe his kid has some special powers, like being able to communicate with magical creatures easily. And Sirius has to teach the kid how to control and use these powers without attracting too much unwanted attention.
The plot could involve Sirius Black's child being raised in the Muggle world by a relative who doesn't want anything to do with the wizarding world. However, as the child turns 11, strange things start to happen. A wizard or witch arrives to take the child to Hogwarts. Once at Hogwarts, the child starts to learn about their father and the rumors surrounding him. They then decide to clear their father's name and along the way, make new friends who help them in their quest.
One possible plot could be that Sirius Black discovers he has a baby unexpectedly. Maybe it was a result of a past relationship he had before his time in Azkaban. He then has to learn how to be a father while also dealing with the wizarding world's reaction to his new situation, as many might still be suspicious of him.
Maybe Sirius Black gets frustrated with Hermione's know - it - all attitude in the fanfiction. He could be tired of her constantly correcting others or trying to take charge all the time.
The fanfiction could start with Sirius being magically transported to a new, more just courtroom. Dumbledore could be secretly working behind the scenes to ensure a fair trial. The trial could be full of twists and turns. For example, the dementors that were involved in his original imprisonment might be called as witnesses, but Sirius could use his knowledge of their weaknesses to discredit them. And in the end, he is proven innocent, much to the joy of his supporters and the shock of his enemies.
The plot could involve Sirius Black coming back as a vengeful spirit. After his death, his soul is not at peace. He haunts the halls of Hogwarts, especially the areas that held bad memories for him. Students start to see his apparition, and strange things begin to happen. For example, portraits on the walls start to cry or rooms suddenly become freezing cold. The main character, a young student, decides to find out the truth behind these hauntings and has to face the terrifying Sirius Black's spirit.
It could be a completely new character created for the fanfiction. Maybe a powerful witch who met Sirius during his time on the run. She could have been helping him and they fell in love, and then had a kid.
One possible plot could be that Hermione's kid inherits her love for knowledge. Maybe the story shows the kid starting at Hogwarts and struggling to live up to the expectations of being Hermione Granger's child. They could face pressure from peers and teachers alike, but ultimately find their own path in the magical world, perhaps by specializing in a new area of magic that Hermione hadn't explored much.
Perhaps in the fanfiction, Tony's kid is a result of a one - night stand. The mother drops the kid off on his doorstep one day. Tony is initially shocked but then decides to take on the challenge. He enlists the help of his colleagues, who give him all kinds of parenting advice. His kid could turn out to be really smart and have an interest in forensics just like him, and they could start solving mini - mysteries together around the house.
In such a fanfiction, perhaps Harry discovers some new evidence that was overlooked. He might find a witness who was too afraid to come forward before. Then he presents this evidence to the Ministry, forcing them to give Sirius a trial.
Perhaps in this fanfiction, Bella had the kid in unexpected circumstances. She might be trying to keep the identity of the father a secret from the kid and the town. As the kid grows up, he or she starts to ask questions, and Bella has to decide whether to tell the truth or keep the secret, which adds a lot of drama to the story.