Susanô jihen boppatsu Mô hitotsu no bakumatsu!

The Bakumatsu, it is an age where idealists struggle passionately for the future of Japan according to their own beliefs. Takasugi Shinsaku, a lucky adventurer from Choshu, tries to sneak onboard one of the ships of the shogunate navy along with his partner, Katsura Kogoro. They are after a legendary treasure said to possess the power to manipulate time called a chronometer. Upon learning that the shogunate is after that power for themselves, Takasugi plots to destroy the device since he believes they shouldn't be allowed to use boring cheats to maintain their power.