When his star recruit botches a Major League Baseball debut, humiliated talent scout Al Percolo gets banished to rural Mexico, where he finds a potential gold mine in the arm of young phenom Steve Nebraska. Soon, the New York Yankees put a $55 million contract on the table—provided a psychiatrist can affirm Nebraska's mental stability.

Wealthy entrepreneur Bruce Wayne and his ward Dick Grayson lead a double life: they are actually crime fighting duo Batman and Robin. A secret Batpole in the Wayne mansion leads to the Batcave, where Police Commissioner Gordon often calls with the latest emergency threatening Gotham City. Racing to the scene of the crime in the Batmobile, Batman and Robin must (with the help of their trusty Bat-utility-belt) thwart the efforts of a variety of master criminals, including The Riddler, The Joker, Catwoman, and The Penguin.