Gintoki Sakata wakes up in an Edo he doesn't recognize, five years gone and ravaged by a plague nobody stopped, in a timeline where he was never around to save it. Chasing down what erased him from his own history, he tracks the changes back toward Kagura and Shinpachi Shimura, the two people whose lives he most needs to set right before this becomes the Yorozuya's last job. Novelization of the second Gintama theatrical film.