Typically, it starts with the event of Harry getting bitten. Then, it often shows his immediate reaction, like shock and fear. Next, his friends' reactions are explored, whether they are accepting or afraid. The plot may then develop as Harry tries to find a cure or learn to control his new werewolf nature. For example, he might seek help from Lupin or other werewolves.
I'm not sure about a specific one but generally, in such fanfictions, the author often explores Harry's struggle with his identity. He was a hero before, but now being a werewolf, he has to face prejudice. Some fanfictions might show him finding new powers related to his werewolf side. For example, he could have enhanced senses that help him in battles or in solving mysteries. It's all about how the writer wants to take the character in a new and different direction.
Well, one possible plot development could be Harry struggling to control his new werewolf nature. He might have to deal with the stigma within the wizarding world. For example, some might fear him or treat him differently. Another aspect could be his relationships changing. His friends might be initially shocked but then try to support him in finding a way to manage his condition. Maybe he also discovers new powers or abilities related to his werewolf side that he has to learn to use properly.
The story could develop with Hermione trying to hide her condition at first. She might be afraid of how others will react.
Some writers might portray Harry as a tragic figure, constantly struggling with his new werewolf nature. He could be shown as feeling isolated and alone, even from his closest friends.
It could be the werewolf who bit Harry. Maybe the werewolf has some ulterior motives, like using Harry as a pawn in a bigger plan against the wizarding world. Or it could be some pure - blood wizard supremacists who see Harry's new werewolf status as a sign that he is now 'impure' and want to get rid of him.
Over time, they would probably come to accept Harry for who he is. Their friendship could become even stronger as they support Harry through his new challenges. They might even start to fight for werewolf rights within the wizarding world because of Harry's situation.
Perhaps the bite leads to a rift between Harry and his friends. Some of his friends might be afraid of him now that he's a werewolf, while others might be over - protective. This could cause a lot of internal conflict within the group. Also, it could lead to Harry having to seek help from unexpected sources, like some of the more reclusive or misunderstood characters in the wizarding world who have experience with werewolves.
In many such fanfictions, it often starts with Hermione being in a situation where she gets closer to the werewolf character. Maybe she's involved in a mission or just by chance. Their relationship begins to build as they understand each other more. The werewolf side might initially be a source of fear or mystery for Hermione, but as they spend time together, she sees the person behind the curse. Their mating can be a complex process, involving magical bonds and deep emotional connections that are explored throughout the story.
Werewolf mates in fanfiction are also sometimes shown as having a deep connection to nature. Since their transformation is linked to the moon, they might have an affinity for moonlit nights and forested areas. They could use this connection to nature to their advantage, perhaps finding hidden magical places or sensing approaching danger through changes in the natural environment.
The plot could develop with Voldemort trying to use Harry to open the Chamber of Secrets again, believing that there are secrets within that could enhance his power further. Harry, on the other hand, might find allies among the Death Eaters who are not fully loyal to Voldemort and use them to create a revolt from within. Also, Dumbledore and the Order of the Phoenix would surely be trying to rescue Harry, which could lead to many intense battles and rescue attempts.