Struggling to adapt to an unfamiliar world of "sound", Hyakkimaru is injured in a fight with a ghoul. He is taken in and nursed by a girl named Mio, who looks after children orphaned by war. However, after becoming aware of a demon nearby, Hyakkimaru heads out to fight it before he is fully recovered.

At a certain village, young girls are offered up as ritual sacrifices to appease a giant centipede demon that appears shrouded in black clouds. Hyakkimaru and Dororo team up with Saru, a boy whose older sister has been offered as a sacrifice, and together they confront the demon.

The shark demon lets out a roar and attacks Dororo, who is tied up and unable to move. Meanwhile, a troop of soldiers commanded by Tahomaru is also approaching the cape.

Inside Daigo's castle, Lady Nui appears before the cell in which Dororo has been imprisoned. Meanwhile, Hyakkimaru is also approaching the castle as he tries to take back both his body and Dororo. Behind Hyakkimaru stands Midoro, who has transformed into a ghoul.