Izumi Uchiha, who lost his parents during the Nine-Tails Rebellion, accidentally awakened the "Silver Eye" that can see the rift in time and space, and has since been involved in the conspiracy of the Toki clan. This race from the gap between time and space attempts to obliterate all parallel worlds, leaving only a "perfect" timeline controlled by them. In order to prevent this disaster, Izumi formed the "Counter Current" organization with the defected Sasuke, the remnants of Amegakure, and allies from all sides to secretly fight against the infiltration of the Toki clan.
From Konoha to Amegakure, from Mt. Miaomu to the Valley of the End, Izumi gradually reveals the truth about his "Watcher bloodline" - his eyes are fragments of the core of ancient time and space, and are also the key coveted by the Toki clan. The power of "Asura and Indra" sleeping in Naruto and Sasuke's bodies is actually the last hope to restart the order of time and space.
"What's the point of freedom if all possibilities are eliminated?"
In this war that concerns the survival of the entire world, faith and bonds become the force that tears apart destiny. When the Key to Finality awakens, the watchers of time and space will face the cruelest choice - to succumb to the "perfect" dictatorship, or to fight for the numerous possibilities?