As Batman and Robin have to deal with the menace of the Joker, their problems are compounded by the arrival of Bat-Mite. It turns out that he is an imp from outer space who idolizes Batman, and wants to fight crime with him.
A mysterious glowing individual known as the Moonman, who has incredibly strong magnetic powers, terrorises Gotham City. It's up to Batman, Robin and Bat-Mite to stop him.
A new, ecologically-friendly, machine is invented by a professor that can create all types of furs and fabrics from waste materials. The machine is stolen by Catwoman, leaving Batman, Robin and Batgirl to help retrieve it.
Sweetooth, a sugar-obsessed villain, breaks into Gotham City's water supply and replaces all the water there with chocolate syrup. Batman attempts to deal with the criminal, but is pressurised by his ever-increasing insane demands. Batman has to restore the water supply to the city before it's time runs out.
Together, Batman, Robin, Batgirl and Bat-Mite engage in underwater battles with Professor Bubbles in order to stop him from taking over the world.
A super-villain from another planet, known as Electro, reduces Batman and Robin in size using a shrinking ray. Then, he uses a mind-controlling gas on his two small captives, and orders them to steal some top-secret plans from the government, Batman and Robin have to snap out of their hypnotized state, and figure out a way to return to their normal size.
The Penguin opens up a crime school, teaching teenagers to commit thefts for him. Eventually, Batman's utility belt itself is stolen, and he and Robin have to contend with the Penguin without it. The Caped Crusaders have to retrieve Batman's belt full of gadgets and defeat the Penguin and his students.
At the Gotham pier, an individual known as the Chameleon organises a meeting of gangsters who have been defeated time and again by Batman and Robin. He tells them that he himself will be able to get rid of the Dynamic Duo for a price by using his special ability to turn himself into any object imaginable. The Chameleon plans to shut off Gotham Solar Power Plant, and therefore every burglar alarm in the city as well. Bruce and Dick, attempting to enjoy an evening barbecue, despite Bat-Mite's best efforts, soon hear an ear-splitting sound and set off investigate it as Batman and Robin. They trace the sound to the top of a building in the center of town, and run into the Chameleon, who proceeds to battle them. Bat-Mite eventually arrives, and together they are able to capture the Chameleon temporarily, but he turns into a rocket and escapes. The gangsters demand their money back from the Chameleon after he fails to capture the Dynamic Duo, but he promises them that his next plan will not
A jailbreak occurs at Gotham State Penitentiary, and the guards soon discover that is was the Joker. He vows revenge on Batman for his imprisonment, and promises to make him the laughing stock of Gotham City. In the meantime Batman, testing out his new helium spray that is capable of making any object float on the air, is contacted by Commissioner Gordon who alerts Batman to a challenge from the Joker. The Dynamic Duo soon spot a large fire at the junkyard, and suspecting that it is the work of the Joker, go and investigate it. There, they find another clue from the Joker which leads them to a famous Spanish singer, currently performing the famous opera Pagliacci, about a clown. On the opera stage, Batman appears and proceeds to spray laughing gas over the audience, including Commissioner Gordon. In reality, it was the Joker in disguise, but when the real Batman turns up at the Opera House, he is soundly arrested. He quickly proves his innocence, and then proceeds to the Gotham City Zo
Mr. Freeze is very annoyed that he is not considered one of Batman's most powerful foes, and so set the record straight by becoming Public Enemy Number 1, he creates some incredibly turbulent weather conditions. Batman has to not only find a way to stop Freeze's plan, but has to make sure that no people or property are affected by the cold conditions.
Clayface recruits a circus acrobat with a remarkable resemblance to Robin, and together, they pose as Batman and Robin, in order to steal an oil-locating device. The real Caped Crimefighters must prove themselves innocent, and then defeat their doppelgangers.
Gotham City's oil supply is held for ransom by both Catwoman and Clayface, who are working together. The Dynamic Duo, assisted by Batgirl and Bat-Mite attempt to locate the missing oil, and stop the two super-villians.
Penguin creates the Crime-Slime, which has the capacity to turn anyone evil. He uses it on Bat-Mite, turning him from a harmless imp into a villainous little monster. Whilst trying to return him back to normal, Batman and Robin must also deal with the Penguin and his new creation before any more damage is caused.
Together, Joker, Clayface, Catwoman and Penguin launch a simultaneous assault on Gotham City, and then Batman and Robin when they turn up to stop them. While this battle rages on, another villain known as Zarbor, who is another imp from Bat-Mite's home planet of Ergo, steals all of the Earth's nuclear power plants.
Batman and Robin track Zarbor back to his home planet, where they find the missing nuclear power plants. There, they have to do battle with the incredibly powerful villain before the Earth runs out of power.
Seeking revenge on Batman and Robin, Zarbor uses a mind-altering ray on the both of them, turning them into the villainous Crime Crusaders. With Batman and Robin helpless to stop themselves, only Bat-Mite is left to rescue them and defeat Zarbor.