It could also be about a character who gets a new chance to make amends for a past mistake. They might have wronged someone in the past and now they have the opportunity to correct it. This could lead to a lot of self - discovery and character growth as they face the consequences of their past actions and try to make things right.
In some 'a second chance at love fanfiction', a plot could be that there was a big misunderstanding in the past that led to their break - up. Years later, through a series of coincidences, they discover the truth. This new - found knowledge makes them re - evaluate their past and consider giving their love another try. For instance, if one thought the other was unfaithful because of a false rumor, but later realizes it was all a lie.
One interesting plot could be Naruto getting a second chance to prevent the death of a beloved character, like Jiraiya. He could use his knowledge from the first time around to change the course of events and save his mentor, which would then have a huge impact on the story's development.
Perhaps in this fanfiction, Naruto has a second chance to fix the strained relationship with Sasuke from the very start. He could approach Sasuke differently, share his pain more openly, and prevent Sasuke from leaving the village in the first place, which would change the entire dynamic of the story.
One interesting concept could be new jutsu that the characters develop. For example, Naruto might discover a jutsu that combines his Rasengan with some new element. Another concept could be alternate relationships between the characters. Maybe Sasuke and Naruto have a different kind of friendship that changes the course of the story. Also, new villains or threats could be introduced that are unique to this fanfiction.
Maybe in this fanfiction, Harry's second chance at life allows him to prevent certain tragedies. For instance, he could figure out a way to save Sirius Black much earlier. He might have a premonition about what's going to happen and use his knowledge from his first life to change things. This would completely change the dynamic of the story as Sirius could play a more active role in Harry's life and in the fight against Voldemort.
One interesting plot could be Percy and his friends going on a quest in a new, unknown realm. Maybe a place that's not part of the regular Greek mythology but still related in some way.
Another plot might involve the characters in the fanfiction forming unexpected friendships in this new place. They could come from different backgrounds but bond over shared experiences in this new and unfamiliar setting. For example, a shy character might open up to a more outgoing one and they could help each other face the challenges of living in the new place.
One possible plot could be Ash exploring the unique Unova Pokémon and forming a special bond with a rare Unova Pokémon like Zorua. He could face off against Team Plasma in a new way, perhaps uncovering a deeper conspiracy within the team. Another plot might involve Ash competing in the Unova League with a team of Unova Pokémon he has carefully trained, facing tough opponents and learning new battle strategies along the way.
One popular plot could be Naruto and Ino getting a second chance at their relationship after some misunderstandings in their youth. Maybe they both realize they had deeper feelings for each other all along but were too caught up in other things. For example, Naruto was so focused on becoming Hokage and Ino was busy with her family's flower shop and her ninja training. Another plot could involve them teaming up for a dangerous mission that forces them to rely on each other in new ways, rekindling their connection. And sometimes, a plot might include a time - travel element where they go back to a crucial moment in their past and change things for the better in their relationship.
Another plot might involve Teddy getting into some sort of trouble in New York, like accidentally using magic in front of Muggles, and Harry has to come to his rescue and figure out a way to cover it up without breaking the Statute of Secrecy. It could lead to a lot of adventures as they try to avoid the attention of the Magical Congress of the United States of America.