The ruler of the underground world, is planning to conquer the whole world. Riding the fire dragon Isamu and Angel, the princess of the undersea kingdom, try to stop him from destorying their world.

A Toho film featuring the comedy duo Konto 55, (コント55号), comprised of comedians Kinichi Hagimoto and Jiro Sakagami.

Captain Murakami takes over as skipper of the Azuma Maru, replacing the well-liked former captain. Murakami forces the crew to work harder than they ever have, creating enmity and exhaustion. Just when the ship has taken a huge catch of tuna in its nets, Murakami learns that his ship is the only one in position to rescue the crew of another ship, sinking in a storm. He must choose between saving the catch or saving lives. Either choice may mean his ruin.

After helping a pregnant girl escape from their reform school and facing the resulting punishment, a clique of delinquent girls eventually reunites a year later in Tokyo to face different challenges in the form of yakuza and… street vendors.