It could be a love story. A person uses the Time Turner to go back and meet their true love at an earlier time. They get to know each other better and avoid all the misunderstandings that happened in the original timeline.
Well, it could be about a student who uses a Time Turner to fix a mistake in an exam. They go back in time, study harder, and ace the test.
Maybe it's a story where a character uses the Time Turner to prevent a tragic event in their family's history. They keep going back and making small changes until they succeed in saving their loved ones. For example, they might stop a relative from getting on a doomed ship or prevent a fire from starting in their family home. This would involve a lot of trial and error as changing the past isn't always straightforward and can have unforeseen consequences.
The moral dilemmas are also fascinating. Just because you can go back in time, does it mean you should? For example, if you prevent someone's death, are you interfering with the natural order of things? And what if that person was supposed to die to save many others in the future? These kinds of questions can add depth to the story.
One possible plotline could be Timmy struggling to keep her secret while dealing with her Fairy Godparents. Maybe she's afraid they'll react differently if they find out she's a girl. For example, she might worry that they'll start treating her like a princess instead of a regular kid with wishes.
Hermione got a Time - Turner in the Harry Potter series. It was a very special device that allowed her to go back in time. This was crucial for her to attend more classes than were physically possible at once. For example, she was able to take both Muggle Studies and Ancient Runes at the same time slot. It also played a significant role in some of the adventures she had with Harry and Ron, like saving Sirius Black and Buckbeak. The Time - Turner was a magical yet dangerous object, as misusing time - traveling magic could have disastrous consequences, but Hermione managed it quite well most of the time.
Perhaps in this fanfiction, the Time - Turner malfunctions while Hermione is in the middle of a confrontation with Bellatrix. This could send them both to a different time period, maybe even one where the wizarding world is in a completely different state. They would have to find a way to work together, at least temporarily, to get back to their own time. Hermione would be reluctant to trust Bellatrix, but she might not have a choice. And Bellatrix would be both intrigued and suspicious of Hermione.
In a time travelers story, perhaps the protagonist travels to the future. She finds a world where technology has both advanced and caused problems. There are flying cars but also a lack of privacy due to over - surveillance. She then tries to find a way to bring back a message to the present to prevent the negative aspects of this future from happening. She might face challenges like being arrested as an illegal time traveler in this future society.
An 'end of time story' might focus on how people deal with the knowledge that time is ending. Some could be in denial, while others might try to make the most of the remaining time. It could also involve a journey to find a way to stop the end of time, like searching for a hidden power or ancient artifact.
One possible real - story element could be the changing social status. In real life, teens often experience a shift in their popularity, just like Jeanette. Another element might be the rumors and misinformation. Teens can be cruel with spreading false stories, similar to what happens to Jeanette in the show.
I think it should be 'once upon a time'. In that case, it could be a story about a princess locked in a tower. A brave knight heard about her plight and decided to rescue her. He rode his horse for days and fought many monsters on the way to the tower. Finally, he reached the tower, defeated the dragon guarding it, and rescued the princess.
In fanfiction, the Time - Turner can be a tool to bring Hermione and Snape closer. For example, if Hermione uses it to help Snape with a past event, he may start to trust her more. This newfound trust can change their relationship from one of animosity in the original story to a more collaborative and understanding one. They might share secrets and knowledge that they wouldn't have otherwise.
One interesting Time Turner story could be about a character using it to go back in time to prevent a disaster. For example, they might stop a major war from starting by changing a crucial event in the past.