Fūma Kotarō and Oboro begin the search for the Wind Fort while Dennai the Bat starts to look for Shintarō. Shintarō collapses from a wound on a mountain road and is helped by an old man and his grand-daughter. The old man is one of the guardians who for generations have kept seekers of the buried treasure from the Wind Fort. With the old man's directions, Shintarō heads for the Wind Fort and finds the map of the Water Castle. Dennai attacks him but their fight is cut short when the old man shoots the ninja. Shintarō is safely reunited with Tonbei and Shūsaku and they continue their journey to the Water Castle.
