The Land of Whirlpools has fallen, its Uzumaki clan massacred by the hidden villages during the Second Great Ninja War. From the rubble of his ancestral home, Uzumaki Chihiro awakens not only as the sole surviving heir but also with the memories of a transmigrator and a mysterious system. Tasked with restoring his destroyed nation, Chihiro discovers his power lies not in traditional ninjutsu, but in summoning legendary warriors from the Soul Society.

With a massive reserve of reputation points inherited from his fallen people, he goes all-in on his first recruitment. Blessed by a newbie critical hit, he summons Gin Ichimaru, the cunning Captain of the Third Division. Now, amidst the blood-soaked ruins, a disheveled young lord commands a god of slaughter to cleanse the invaders.

As Gin's blade cuts down enemy ninja with terrifying speed, Chihiro begins his desperate journey to rebuild the Uzumaki legacy, one summoned captain at a time.