Otohime's terrifying plot that involves all of Edo finally enters its final stage. Gintoki, Katsura, Shinpachi, Kagura and the others make every effort to stop her plans… How will this battle end? And what will be the fate of Earth?!
The Old Age Cannon will
fire in two minutes.
El Cañón Vejez Natural 
disparará en 2 minutos.
O Canhão da Melhor idade vai
 disparar em dois minutos.