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?!
But at least, in the deep sea,
I hope to sleep next to you...
Pero espero, al menos, 
poder dormir a tu lado en el mar.
É Mas pelo menos, no fundo do mar, 
espero deitar-me ao seu lado...