On a foray into The Pick Chip Stamps Factory in Gotham City, The Green Hornet and Kato, tracing a flood of counterfeit stamps, are confronted by the unlikely Col. Gumm, an evil foreman running a counterfeit rare-stamp operation out of the factory, who informs boss Pinky Pinkston. The two crimefighters leave even though they have a good chance of trouncing Gumm. Factory owner Pinky Pinkston is concerned about the break-in, so she asks Commissioner Gordon for help, and Gordon alerts The Dynamic Duo. Later, Bruce Wayne lunches with Pinky and her friend Britt Reid, and Gumm (in disguise) overhears their conversation as she asks Bruce to get The Batman to guard her factory against The Green Hornet and Kato.

Bruce and Britt visit Boris Severoff's Stamp Store to complain about counterfeit stamps. Severoff (Gumm in disguise) denies everything, but he hurriedly advises his thugs, Canceled, Reprint, and Block, to dismantle the operation. Unfortunately, Pinky overhears Gumm's conversation, and she is bound and gagged in his office. The Green Hornet and Kato, returning to the factory in an attempt to round up the do-badders, are captured by Gumm and his men. Although The Batman and Robin arrive soon after, they fall into a glue trap and are forced to watch in horror as The Hornet and Kato are fed to an Enlarged Perforation and Coiling Machine, in which they are both to be blocked, gummed, and perforated into lifesized stamps, while The Caped Crusader and The Boy Wonder, stuck to Col. Gumm's undetatchable glue pad, await their turn!