Jervis Tetsch, aka the Mad Hatter, is abducting all the jurors who convicted him of a previous crime wave. He is also taking their hats. His final target is none other than Batman, who provided the key testimony in the Mad Hatter's trial. Batman and Robin have the Mad Hatter and his gang cornered but the criminal mastermind manages to encase the Caped Crusader in plaster of Paris.

Batman, thanks to superior breath control, is able to escape the plaster of Paris in which he was encased. Despite this, the Mad Hatter is still at large. Eventually, Batman and Robin again face off against the Mad Hatter at his criminal lair. Things look bad, but the Dyamic Duo manage to triumph.

The Mad Hatter has escaped from prison, and is on a quest to add Batman's cowl to his collection of hats. He attends Gotham City's annual headdress ball disguised as the Three-tailed Pasha Of Panchagorum, and snatches a large ruby off of columnist Hattie Hatfield's headdress. The villain makes a getaway, but not before turning Batman's cowl pink with a radioactive spray. He trails Batman to the Atomic Energy Laboratory, knowing he will have a chance to snatch his cowl when it is removed for decontamination.

What appear to be the skeletons of Batman and Robin are found at Gotham City's Atomic Energy Laboratory, where the Mad Hatter left them to irradiate. Word of their demise spreads like wildfire. With the world busy mourning its loss, the Mad Hatter has no trouble snatching a valuable ruby from the Golden Buddha of Bergama's forehead. However, when rumor spreads that Batman and Robin are still alive, the Mad Hatter's scheme appears jeopardized.