Another plot could be that they travel to a time when the Akatsuki was first formed. Naruto might try to persuade the members to choose a different path. Sasuke could explore the reasons behind the Akatsuki's creation more deeply. Sakura could use her skills to heal some of the wounds that led to the formation of the Akatsuki in the first place.
They could also travel to a time during the Third Great Ninja War. Naruto would be eager to change the outcome of some battles and save lives. Sasuke could gain a better understanding of the power dynamics between the different ninja villages at that time. Sakura might focus on providing medical support to the soldiers, and along the way, they all learn valuable lessons that they bring back to their own time.
They could also travel to a time during one of the great ninja wars. They might get involved in battles they previously only read about in history books. Sasuke could team up with his ancestors and Sakura could learn new medical techniques from the medics of that time. This would not only change the course of the war they are in but also bring back new knowledge to their own time.
One idea could be that Sasuke and Sakura travel back to their childhood days. They could then use their knowledge of the future to prevent certain tragedies from happening in the village. For example, they might stop the Uchiha massacre, which would change the entire course of Sasuke's life and their relationship.
One idea could be that Sasuke and Sakura travel back to the time when the Uchiha clan was still alive. They could try to prevent the massacre. Sasuke might have the chance to talk to his parents and change the fate of his family. Sakura could use her medical skills to help those who were injured during that chaotic time.
How about a story where an unknown enemy creates clones of them? Naruto, Sasuke, and Sakura have to not only fight these clones but also figure out who the enemy is and why they are being targeted. Along the way, they might discover new powers within themselves and also learn more about their relationships with each other.
In a fanfiction, there could be a story where a mysterious enemy targets Sasuke, Naruto and Sakura specifically because of their unique bond. The three of them then have to go into hiding and figure out who the enemy is and what they want. Along the way, they rely on each other's strengths and grow even closer as friends.
One plot idea could be that Naruto time - travels back to the early days in the village. Sakura, being the center of a harem, has different ninja from different clans vying for her attention. Naruto, with his knowledge of the future, tries to navigate this new dynamic while also protecting Sakura from potential threats within the harem. Another could be that Sakura herself time - travels and has to deal with a harem that forms around her in the past, where she has to balance her own goals and the feelings of those in her harem.
A different plot could involve Naruto traveling back and finding that Sakura has a completely different personality in this harem - set - up. She could be more confident and forward, which catches Naruto off - guard. He then has to adapt to this new Sakura while also exploring his relationships with the other members of the harem. This could lead to some comical and also some very heart - felt moments as he discovers new sides of his friends and potentially falls in love in a whole new way.
Maybe a plot where Sasuke and Sakura go on a mission together, and Naruto's family has to step in to help when things go wrong. For example, Sasuke and Sakura are sent to investigate a strange occurrence on the outskirts of the village. But they get trapped, and Naruto's son, using his unique skills learned from his father, manages to find and rescue them, strengthening the ties between the families even more.
One plot idea could be Sai trying to understand the deep bond between Naruto, Sakura and Sasuke. He might initially struggle as he has his own unique upbringing. For example, he could be assigned a mission with the three of them and slowly learn about their history, like Naruto's determination to bring Sasuke back and Sakura's unrequited love for Sasuke in the beginning. This could lead to Sai having a new perspective on friendship and loyalty.
One idea could be Sasuke traveling back to the Uchiha massacre. He might try to prevent it, which would completely change the Naruto storyline. This could lead to him having to face off against Itachi in a different context, not as an avenger but as a protector of his family.