The plot could be that the squirrel mask is a key to an ancient power. Minato knew about it but passed away before he could fully explore it. Naruto stumbles upon the mask and Tsunade warns him of the potential dangers. However, Naruto's curiosity gets the better of him. He starts to have visions of Minato, who gives him clues on how to unlock the mask's power. Eventually, Naruto uses this power to protect the village from a new threat.
A fanfiction plot could be that an evil force is after the squirrel mask because it has the power to control all the squirrels in the forest (which can be used for spying or attacking). Minato had hidden the mask long ago to keep it safe. Naruto finds the mask and Tsunade initially doesn't believe the power it holds. But as the evil force closes in, they realize they need to figure out how to use the mask's power. Naruto, with his connection to Minato's chakra, manages to tap into the mask's abilities and turn the squirrels against the evil force to save the village.
Perhaps the squirrel mask was a gift from Minato to Tsunade long ago. But it got lost over time. Naruto discovers it by accident. Tsunade realizes the significance of the mask when Naruto shows it to her. It turns out the mask has the ability to access a hidden dimension. Minato's consciousness is trapped in this dimension. Naruto, with Tsunade's guidance, enters the dimension using the mask to rescue Minato and in the process, they all learn more about the history of the village and their families.
One possible plot for such a fanfiction is that the squirrel mask has been stolen by an enemy. Minato's spirit appears to Naruto and tells him about the importance of the mask. Tsunade, as the Hokage, organizes a mission to retrieve it. Naruto, with his determination and the help of his friends, embarks on this mission. Along the way, he discovers new abilities within himself that are somehow related to the mask and his father Minato's legacy.
Their relationships could be explored through flashbacks. For instance, we could see how Minato interacted with Tsunade when he was alive. Maybe he sought her advice on certain matters, or they had some joint missions. This would give us insights into their respect for each other.
A plot could revolve around Minato's spirit guiding Naruto and Tsunade in a difficult situation. For example, there's a mysterious illness spreading in the village and Minato's spirit gives them clues on how to find a cure. Or perhaps a story where Naruto, Minato, and Tsunade are all trapped in a genjutsu - created alternate reality, and they have to find a way to break free while also learning some important lessons about themselves and their relationships.
One possibility could be that Minato was under some kind of mind - control spell. Maybe an enemy of Konoha managed to manipulate him into thinking that Naruto was in danger by being in the village. So, Minato kidnaps Naruto to take him to what he believes is a safer place. But as the story unfolds, Naruto tries to figure out what's wrong with his father and tries to break the spell on him.
Well, one possibility is that Minato arrives just in time to save Naruto from a powerful enemy like Orochimaru. He could use his Flying Raijin to quickly reach Naruto and then use his other jutsu to fend off the attacker.
One possible plot could be Naruto learning unique jutsu from Minato right from the start. Minato could teach Naruto how to use the Flying Thunder God Technique at an early age. This would change Naruto's battles significantly, as he could quickly move around the battlefield and surprise his enemies. He might also learn about Minato's leadership skills and how to handle difficult situations within the village, making him more respected among the villagers much earlier in the story.
Well, it could start with Naruto being in a situation where he feels lost about his own path. Then, he starts researching about Minato more deeply. He finds out about Minato's early struggles, how he overcame them, and his great contributions to Konoha. As Naruto delves into Minato's story, he realizes that Minato was a true hero in every sense. This realization makes Naruto look up to Minato, and he decides to incorporate Minato's values into his own ninja way.
Maybe there's some sort of misunderstanding or a powerful enemy who has framed Naruto. Minato, following the rules of the village, arrests Naruto. As Naruto is in prison, his friends try to find evidence to prove his innocence, and Minato gradually realizes he's made a mistake and starts to help them from the inside.
A 'Naruto Minato Revived' fanfiction could have a plot where Minato is revived in a time of relative peace. He has to adjust to the new world where his son is a hero. He could start mentoring the younger generation of ninjas in the Leaf Village, sharing his knowledge about sealing techniques and combat strategies. He might also be involved in some political intrigue within the village as some might fear his power or see him as a threat to the new order.
Another idea is that Naruto's strong will and determination somehow reach Minato in the past. Minato, inspired by this unseen force which is actually Naruto from the future, finds the strength within himself to overcome a seemingly impossible situation. This could be during the Nine - Tails attack on Konoha, where Naruto's spirit gives Minato the idea to seal the Nine - Tails in a different way that doesn't cost him his life.