Batman avoids a public unmasking but is unable to bring in the Joker, thanks to the villain's utility belt. Eventually, Batman and Robin are captured by the Joker's gang. But the Joker doesn't know a showdown with the Dynamic Duo awaits.
Dr. Shivel aka Mr. Freeze has returned and is seeking revenge on Batman, who accidentally spilled a freeze solution on him, being forced to live in a -50 climate. He is committing crimes involving diamonds, or "ice," in different forms. He freezes the duo, who look like goners.
Vince, a temperamental physician at a Gotham City hospital (apparently a takeoff on Ben Casey), saves Batman and Robin. The Dynamic Duo resume their pursuit of Mr. Freeze. Eventually, Batman substitutes himself for Paul Diamonte, a baseball player, Mr. Freeze has kidnapped. Robin, disobeying Batman's orders to stay away, is also captured by the villain. Now, in his headquarters, Mr. Freeze is using his climate controls so that only Batman or Robin will have access to life-giving warmth.
King Boris, who hails from a European country, comes to Gotham City for a visit. Upon his arrival, there is a disturbance, which includes a clue from the Riddler. Batman and Robin investigate and get on the Riddler's trail. They are trapped by the criminal, who ties them to large wheels that will spin with ever-increasing speed until they are dead.
Batman manages to escape the Riddler's death trap. He and Robin decide to lay low until they can figure out the Riddler's caper. Meanwhile, the Riddler frees King Boris, who brings a gift to a major monument in Gotham City. It turns out the Riddler has substituted a bomb for King Boris's gift and he is demanding a ransom. The Riddler, though, overplays his hand, enabling Batman and Robin to capture the Riddler and his gang.
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.
At Woodrow Roosevelt High School, a vending machine gives out money. Dick Grayson is there to witness it. Batman learns the vending machines are operated by a company bought by the Joker after being released from prison. The Joker and his gang are aided by Susie, a cheerleader at the school. In the course of their investigation, Batman and Robin are captured and placed in electric chairs. If a "one armed bandit" comes up the wrong way, they'll be electrocuted.
A power failure prevents Batman and Robin from being electrocuted. Meanwhile, a recording Batman made confirms that cheerleader Susie is one of the Joker's confederates. Robin, in his Dick Grayson identity, attempts to infiltrate the gang. Meanwhile, the Joker's main plot is finally revealed. Members of the high school basketball team receive answers to final exams from the rigged vending machines. The Joker appears, claiming to be a concerned citizen. The team's starters will be suspended as the Joker bets big money on the team's next opponent. Batman, however, has ...
Alfred contacts Batman by radio from the Batcave. Batman instructs the butler to short circuit a communications device the hero has on his wrist. This enable Batman to get free of his bonds. He and Robin get free just before they would be run over by a subway train. The Dynamic Duo resume their pursuit of False Face, which ends up at an old movie studio.
Catwoman initiates a series of thefts that cause Commissioner Gordon to summon Batman and Robin. But the importance of the crimes go beyond the taking of the objects involved. The Dynamic Duo eventually find Catwoman's lair. But Robin is whisked away while Batman is given a choice between two doors. If he picks the right door, he'll find Catwoman. If he picks the wrong one, he'll face certain doom. The hero makes the wrong selection and is about to be attacked by a tiger.
Batman evades the attacking tiger thanks to his utility belt. First, he scales the wall. Then, he uses a sonic device "to split the tiger's skull," as narrator William Dozier informs us. The hero still has to free Robin, who is facing a separate death trap. Once that task is completed, the Dynamic Duo are back on Catwoman's trail. It turns out the feline villain is after the lost treasure of Captain Manx, which is in a remote spot outside of Gotham City.
Taking advantage of the Riddler's mistaken belief that they were killed escaping his deathtrap, the Dynamic Duo must stop the villain from stealing a treasure of Incan jewels that would mean destroying an archaeological treasure as well.
A former academic who thinks he is really King Tut has returned. Batman and Robin seek his capture. A twist occurs, however, when King Tut's gang kidnaps Bruce Wayne. They are taking the millionaire in an ambulance. As Bruce tries to get free, the rear doors of the ambulance open and Bruce rides a cart toward a cliff.
Bruce frees himself just before the cart he is riding goes over a cliff. As Batman, he works to bring King Tut to justice. But the hero is captured by King Tut instead. Batman is then tortured as King Tut drops a pebble on his head at a time. Robin works to track Batman in time.
Commissioner Gordon appears to have been assassinated during the opening of a new bridge. A copy of Hemmingway's 'For Whom The Bell Tolls' nearly blows up the Batmobile. Both incidents are clues to the Bookworm's latest scheme. Batman and Robin interrogate The Bookworm's henchwoman Miss Limpet but deduce she is leading them into a trap. And while Batman intends to walk right into it, it is Robin who falls first.
Batman saves Robin from the Wayne Memorial Clock Tower at the last possible Big Benjamin second. While they are busy in the Batcave, The Bookworm steals a priceless cookbook from stately Wayne Manor. He then lures the Dynamic Duo into an oversized cookbook on display in the middle of Gotham city and steals the Batmobile. Can Batman and Robin escape before their goose is cooked?
Charlie Chaplin and the Keystone Kops raid the till at the newly opened Gotham movie theater. The culprits turn out to be 'The Riddler' and his gang in disguise. They lead the Dynamic Duo on a crime spree chase from Mother Gatham's Bakery, past the Gotham Library, and into a Temperance Party. At each of these events, the villains are accompanied by German film maker Van Bloheim who captures everything on celluloid.
Robin has been captured by 'The Riddler', leaving Batman fearing his own reaction. Therefore he asks Commissioner Gordon to accompany him to the Bat-cave to witness his interrogation of Pauline, The Riddler's moll. All clues eventually lead back to the priceless silent film collection of Mr. Van Jones, to which The Riddler is about to add his own silent masterpiece.
Alfred is kidnapped by the Penguin and his finny fiends, while buying caviar for the Multimillionaires Annual Award Dinner. Although the loyal butler does not know the secret location where the dinner is to be held, Penguin brainwashes the man-servant as part of his diabolical scheme. Batman and Robin track down the Penguin's hideout on a fishing pier owned by 'Knott A. Fish', only to walk into a trap.
The Penguin learns the location of the Multi-millionaires Annual Award Dinner from Alfred: on board Bruce Wayne's S.S. Gotham Neptune. His female fink Finella replaces the beauty queen for the chosen charity Miss Natural Resources, pops out of a giant cake at the diner and proceeds to gas all the multimillionaires present, as well as Bruce Wayne and Master Grayson's replacements: Batman and Robin.