One plot idea could be Naruto discovers a long - lost jutsu created by the Second Hokage. He then has to master it to defeat a new, powerful enemy threatening the village. Another could be that Naruto travels back in time and meets the Second Hokage, learning valuable lessons about leadership and sacrifice from him. Maybe the Second Hokage's spirit appears to Naruto in a time of crisis and imparts some secret knowledge only he knew.
Well, here's a plot. The Second Hokage placed a powerful seal on a certain area long ago. Naruto stumbles upon this area and accidentally activates the seal. Now he has to deal with the consequences. The seal releases some sort of ancient power or a dangerous entity. Naruto, with his knowledge of modern ninja techniques and his indomitable spirit, tries to either control or destroy this new threat, all while having visions of the Second Hokage guiding him through the ordeal.
A possible plot could be that there is a curse placed by an ancient enemy on the Hidden Leaf. The only way to break it is to combine the powers of Naruto and the knowledge of the Second Hokage. Naruto has to enter a spiritual realm where he can communicate with the Second Hokage's spirit. They then work together, with Naruto using his modern - day skills and the Second Hokage providing ancient wisdom, to break the curse and save the village.
One idea could be Naruto facing a new and powerful enemy that challenges the very foundation of the Hidden Leaf while he's Hokage. He has to use his unique leadership style and ninja skills to protect the village. Another could be Naruto implementing new training programs for the younger ninjas, based on his own experiences growing up.
One idea could be a story where Naruto has to face a new, powerful and mysterious enemy that has the ability to manipulate time. This would put his skills as a Hokage to the ultimate test.
A really interesting plot could revolve around the Second Hokage's relationships. For example, his relationship with the other clans in the village. He might have to deal with the Uchiha clan's growing unrest. This could lead to him making difficult decisions to maintain the peace in the village. He could also have a mentor - mentee relationship with a young and talented ninja, guiding them to become a great shinobi.
One plot idea could be Naruto facing a new threat from an old enemy who has found a way to return stronger. For example, Orochimaru could have created a new form of jutsu that allows him to possess multiple shinobi at once and Naruto has to figure out how to stop him without harming the innocent. Another idea is Naruto dealing with political unrest within the Hidden Leaf. Some clans might not be happy with his new policies regarding ninja training and he has to find a way to keep the peace. A third idea could be Naruto going on a diplomatic mission to a far - off land where they have a very different view on ninjas and he has to convince them that the Hidden Leaf means no harm.
Another plot could involve Naruto trying to implement new policies in the village. For example, he wants to improve the relationship between the different ninja clans. He faces resistance from some of the traditionalist clans who are afraid of change. Naruto then has to use his charisma and leadership skills to convince them.
One idea could be Naruto facing unexpected challenges right before his coronation as Hokage. Maybe a new enemy emerges that questions his worthiness, leading to a final battle where he has to prove himself not just as a powerful ninja, but also as a true leader. Another plot could involve Naruto dealing with internal village politics. As he is about to become Hokage, different clans start vying for more power and influence, and Naruto has to balance their demands while still maintaining the unity of the village.
One idea could be Naruto facing a new and mysterious threat from a hidden clan that has long been dormant. They could be trying to undermine the peace he has worked so hard to achieve as the Seventh Hokage.
One idea could be exploring the Shodai Hokage's early days as a ninja, before the founding of the village. Maybe show his training and how he developed his unique skills.
One idea could be Naruto having to deal with a new and powerful enemy while still adjusting to his role as the 5th Hokage. Maybe this enemy has a unique jutsu that can disrupt the village's chakra network. Another idea is Naruto using his new position to reform the shinobi education system in the village. He could introduce new training methods that focus on teamwork and moral values as well as combat skills.