In the fanfic, it might be that Harry's time travel is accidental. When he meets James' twin, they initially have a lot of misunderstandings. But as they get to know each other, they discover that they both have a connection to the fate of the wizarding world. They then use their combined knowledge of the future and the past to try and make the wizarding world a better place.
One possible plot could be that Harry travels back in time and meets James' twin. Maybe they team up to change some events in the wizarding world. For example, they could try to prevent Voldemort's rise to power earlier on. This would create a whole new set of adventures and challenges for them.
Well, the fanfic could explore the relationship between Harry and James' twin in the context of time travel. Perhaps James' twin has some unique magical abilities that Harry needs to complete his mission. They could go on a quest to find a powerful magical artifact that was lost in time. Along the way, they face various obstacles, like dark wizards from different eras who are also after the artifact.
A plot that I find very intriguing is when a character travels back in time to prevent the death of a loved one. For example, in some fanfics, Harry travels back to save Sirius. This creates a lot of tension as he has to deal with the time - turner rules and the possible consequences of changing the past.
One possible plot could be that James, Lily, and Albus travel back in time to the Marauder's era. They could interact with the young versions of their family members, like Sirius and Remus. Maybe they try to change some small events to prevent future tragedies without messing up the timeline too much.
Well, one intriguing plot is when Harry time travels and has to hide his true identity as a Gryffindor - turned - Slytherin. He has to act like he belongs there while secretly trying to figure out how to get back to his own time. Another plot could be that his time travel into Slytherin causes a rift in the timeline, and he has to fix it before everything goes wrong. For example, in some fanfictions, his presence in Slytherin changes the relationships between the houses and he has to make sure the good guys still win in the end.
Well, in some older Harry Potter time travel fanfiction, the plot might involve Harry traveling back to his own past to fix his mistakes. He might have regrets about how he treated certain people or how he made certain decisions. So, he goes back to make amends. This can lead to some really heartwarming and also tense moments as he tries to change things without causing more harm. For instance, he might go back to when he first met Hermione and be nicer to her from the start. This can then change their relationship in unexpected ways throughout the story.
One possible plot could be that Harry travels back in time to Tom Riddle's school days at Hogwarts. He could try to prevent Riddle from turning into Voldemort by befriending him and showing him a different path. Maybe Harry uses his knowledge of the future to expose the dark magic that was influencing Riddle at the time.
The time travel might initially create a sense of distrust. James' twin may wonder why this strange boy from the future has suddenly appeared. However, as Harry proves his intentions are good by helping the twin with some small tasks, like finding a lost pet or fixing a broken magical object, the twin starts to warm up to him. Then they can start to collaborate on bigger things, like protecting their family from an upcoming threat that Harry knows about from the future.
Regarding the Iggy fanfic involving Harry time travel and James' brother, one possible plot could be that Harry accidentally time travels to a period when James' brother was in a difficult situation. Harry, using his knowledge from the future, tries to help him out. Along the way, they might discover some unique magical abilities or artifacts that were previously unknown. This could also lead to a deeper understanding of the Potter family history and how it has influenced the wizarding world as a whole.
It could be really exciting. Harry's time travel might lead him to meet James' brother at a crucial moment in the past. They could form an unexpected bond and work towards a common goal, like saving someone or something important in the wizarding world.
One possible plot could be Naruto using the Rinnegan's time - travel ability to prevent the Uchiha massacre. He could change the course of history and save Sasuke from a life of revenge.
One possible plot could be that Android 18 and Goku time travel to the past to prevent the Androids from ever being created. They might face challenges like dealing with the Red Ribbon Army before they start the Android project. Another plot could be that they travel to a future where the Earth is in ruins and they have to find a way to change the events that led to it. They could also time travel to an alternate timeline where Goku was never sent to Earth and see how that changes everything.