Tatsumi arrives in the Imperial Capital in hopes of earning money for his impoverished village. While stranded in the streets, he attracts the attention of a wealthy family that offers to take him in. Unfortunately, his would-be benefactors are attacked by a group of killers known as Night Raid. Beneath the thin veneer of the Capital lies a teeming hive of corruption. With nowhere else to turn, Tatsumi joins the Night Raid to help put a stop to the wicked ways of the Capital once and for all.