Following the brutal clash on Rakuyou, the hidden history and real ambition of the immortal Naraku commander Utsuro are finally exposed. By corrupting the Altana supplies on several worlds, Utsuro has successfully summoned the greatest foe of the Tendoshuu: the Altana Liberation Army. With Earth serving as the principal arena in this interstellar conflict, Utsuro"s grand scheme to annihilate the planet—and himself—is almost finished.
An assault on the O‑Edo Central Terminal signals the start of the decisive struggle to reclaim samurai territory. With the Yorozuya absent, the bakufu nearly shattered, and the Shogun gone, the populace is utterly defenseless as the Liberation Army ransacks Edo under the pretense of liberating them from Tendoshuu domination.
Caught amid the clash of two equally formidable powers, can Gintoki, Kagura, Shinpachi, and the former pupils of Shouyou Yoshida set aside their quarrels and rally allies to defend what they cherish?