The Dynamic Duo faces four super-villains who plan to hold the world for ransom with the help of a secret invention that instantly dehydrates people.
The archvillains of The United Underworld - The Catwoman, The Joker, The Riddler and The Penguin - combine forces to dispose of Batman and Robin as they launch their fantastic plot to control the entire world. From his submarine, Penguin and his cohorts hijack a yacht containing a superdehydrator, which can extract all moisture from humans and reduce them to particles of dust. The evildoers turn the 9 Security Council members in the United World Building into 9 vials of multicolored crystals! Batman and Robin track the villains in their Batboat and use Batcharge missles to force the sub to surface.
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